{"title":"Engines \u0026 Parts","description":"","products":[{"product_id":"engine-caps-3u","title":"ENGINE CAPS (3u)","description":"\u003cp\u003eThis pack contains three different engine caps, one for the carburetor, one for the engine exhaust and one for the fuel inlet. 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Like its predecessor the MXR, this engine is manufactured by the prestigious Japanese brand O.S. Engines, and it’s also based on their square stroke Speed B21 engine. \u003c\/p\u003e\n\u003cp\u003eApart from the modifications that the MXR already had, such as the crankshaft, the back plate, the modified sleeve and the innovative FlowMax venturi in 6 and 6.5mm, the v2 version comes with a modified crankcase. All these changes have been made to improve performance, more specifically, to achieve greater power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eWith this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines you can find on the market.\u003c\/p\u003e\n\u003cp\u003eCOOLING HEAD\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 is equipped with the same cooling head as its predecessors (MXS, MTS, MXR). This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003cp\u003eCARBURETOR\u003c\/p\u003e\n\u003cp\u003eOnce again, the MXR v2 comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe carb comes with the Dust Cover Ring from Ultimate Racing. This ring has been designed to guarantee the best sealing of the carburetor.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/p\u003e\n\u003cp\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003eBACKPLATE\u003c\/p\u003e\n\u003cp\u003eSame as in the MXR, the v2 backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It has been milled to improve the gas flow going to the piston and improving engine efficiency and performance.\u003c\/p\u003e\n\u003cp\u003eThanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.\u003c\/p\u003e\n\u003cp\u003eCRANKSHAFT\u003c\/p\u003e\n\u003cp\u003eThe crankshaft features DLC treatment and 2 tungsten weights to increase rotational inertia and improve mid-rev feel. \u003c\/p\u003e\n\u003cp\u003eBEARINGS\u003c\/p\u003e\n\u003cp\u003eIt comes with the original OS ceramic bearing in the rear and Ultimate Racing steel double sealed in the front.\u003c\/p\u003e\n\u003cp\u003eVENTURI\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 comes with a 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/p\u003e\n\u003cp\u003eSLEEVE AND PISTON\u003c\/p\u003e\n\u003cp\u003eStarting from the great base of the MXS, the sleeve has been modified, modifying the ports to be able to vary the inlet and exhaust timing to achieve more power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power.\u003c\/p\u003e\n\u003cp\u003eBoth, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/p\u003e\n\u003cp\u003eCRANKCASE\u003c\/p\u003e\n\u003cp\u003eThis engine includes a new crankcase to improve the internal flow of fuel with the aim of improving performance by achieving extra power. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAIRMAX AIR FILTER\u003c\/p\u003e\n\u003cp\u003eThe AIRMAX concept is to achieve maximum airflow to the carburetor, while respecting the external dimensions of the filter to try to fit most of the 1\/8 offroad cars and bodies. This is achieved by means of a short, large-diameter tapered rubber connector tube that accelerates airflow and an internal filter structure with a larger surface area, without compromising engine protection. The result is a noticeable increase in engine power and performance.\u003c\/p\u003e\n\u003cp\u003eThe rubber connector tube is highly resistant to prevent unwanted damage.\u003c\/p\u003e\n\u003cp\u003eThe filter is supplied with a pre-oiled single layer foams, and includes a filter cover with pre-marked holes that can be used on rainy days.\u003c\/p\u003e\n\u003cp\u003eIncludes 2 adjustable plastic brakets to fit different cars. One is to fix it higher or lower. The other is to fix it closer or further horizontally. Both brackets have adjustable holes to give some leeway for easy adjustment.\u003c\/p\u003e\n\u003cp\u003eIncludes 4 screws and 2 plastic ties for complete mounting of the filter and brackets.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3,49 cc\u003c\/p\u003e\n\u003cp\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/p\u003e\n\u003cp\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/p\u003e\n\u003cp\u003eBore x Stroke: 16,40x16,40mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003eRear Ball Bearing: ceramic\u003c\/p\u003e\n\u003cp\u003eFront Ball Bearing: steel\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: rear\u003c\/p\u003e\n\u003cp\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004312805670,"sku":"UR3401-MR2","price":720.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxr-v2-ceramic-filtro-airmax.jpg?v=1777341516"},{"product_id":"ultimate-engine-mxr-v2-ceramic-w-airmax-filter-2141-supersonic-pipe-combo","title":"ULTIMATE ENGINE MXR v.2 CERAMIC W\/ AIRMAX FILTER \u0026 2141 SUPERSONIC PIPE COMBO","description":"\u003cp\u003eThis is the Combo of the Ultimate MXR v2 Ceramic 3 Transfer .21 Competition Engine with Ultimate Airmax Filter and Ultimate EFRA 2141 Suersonic Exhaust System. Like its predecessor the MXR, this engine is manufactured by the prestigious Japanese brand O.S. Engines, and it’s also based on their square stroke Speed B21 engine. \u003c\/p\u003e\n\u003cp\u003eApart from the modifications that the MXR already had, such as the crankshaft, the back plate, the modified sleeve and the innovative FlowMax venturi in 6 and 6.5mm, the v2 version comes with a modified crankcase. All these changes have been made to improve performance, more specifically, to achieve greater power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eWith this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines you can find on the market.\u003c\/p\u003e\n\u003cp\u003eCOOLING HEAD\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 is equipped with the same cooling head as its predecessors (MXS, MTS, MXR). This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003cp\u003eCARBURETOR\u003c\/p\u003e\n\u003cp\u003eOnce again, the MXR v2 comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe carb comes with the Dust Cover Ring from Ultimate Racing. This ring has been designed to guarantee the best sealing of the carburetor.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/p\u003e\n\u003cp\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003eBACKPLATE\u003c\/p\u003e\n\u003cp\u003eSame as in the MXR, the v2 backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It has been milled to improve the gas flow going to the piston and improving engine efficiency and performance.\u003c\/p\u003e\n\u003cp\u003eThanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.\u003c\/p\u003e\n\u003cp\u003eCRANKSHAFT\u003c\/p\u003e\n\u003cp\u003eThe crankshaft features DLC treatment and 2 tungsten weights to increase rotational inertia and improve mid-rev feel. \u003c\/p\u003e\n\u003cp\u003eBEARINGS\u003c\/p\u003e\n\u003cp\u003eIt comes with the original OS ceramic bearing in the rear and Ultimate Racing steel double sealed in the front.\u003c\/p\u003e\n\u003cp\u003eVENTURI\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 comes with a 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/p\u003e\n\u003cp\u003eSLEEVE AND PISTON\u003c\/p\u003e\n\u003cp\u003eStarting from the great base of the MXS, the sleeve has been modified, modifying the ports to be able to vary the inlet and exhaust timing to achieve more power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power.\u003c\/p\u003e\n\u003cp\u003eBoth, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/p\u003e\n\u003cp\u003eCRANKCASE\u003c\/p\u003e\n\u003cp\u003eThis engine includes a new crankcase to improve the internal flow of fuel with the aim of improving performance by achieving extra power. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAIRMAX AIR FILTER\u003c\/p\u003e\n\u003cp\u003eThe AIRMAX concept is to achieve maximum airflow to the carburetor, while respecting the external dimensions of the filter to try to fit most of the 1\/8 offroad cars and bodies. This is achieved by means of a short, large-diameter tapered rubber connector tube that accelerates airflow and an internal filter structure with a larger surface area, without compromising engine protection. The result is a noticeable increase in engine power and performance.\u003c\/p\u003e\n\u003cp\u003eThe rubber connector tube is highly resistant to prevent unwanted damage.\u003c\/p\u003e\n\u003cp\u003eThe filter is supplied with a pre-oiled single layer foams, and includes a filter cover with pre-marked holes that can be used on rainy days.\u003c\/p\u003e\n\u003cp\u003eIncludes 2 adjustable plastic brakets to fit different cars. One is to fix it higher or lower. The other is to fix it closer or further horizontally. Both brackets have adjustable holes to give some leeway for easy adjustment.\u003c\/p\u003e\n\u003cp\u003eIncludes 4 screws and 2 plastic ties for complete mounting of the filter and brackets.\u003c\/p\u003e\n\u003cp\u003eULTIMATE EFRA 2141 OFF ROAD SUPERSONIC PIPE SET W\/ MANIFOLD\u003c\/p\u003e\n\u003cp\u003eIn this SUPERSONIC update, the gas flow has been improved to achieve a higher top end speed compared to its predecessor. It produces a precise and linear throttle response in the low to mid RPM range with a great top end speed. This pipe set will provide great power to your engine up to the high RPM range to produce a great and easy to drive power curve.\u003c\/p\u003e\n\u003cp\u003eAll these characteristics will provide great torque for those very demanding tracks with sharp corners and hard to clear jumps.\u003c\/p\u003e\n\u003cp\u003eThis exhaust system includes the pipe, the manifold, 3 short springs, 2 medium springs, 1 long spring and 2 manifold gaskets.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3,49 cc\u003c\/p\u003e\n\u003cp\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/p\u003e\n\u003cp\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/p\u003e\n\u003cp\u003eBore x Stroke: 16,40x16,40mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003eRear Ball Bearing: ceramic\u003c\/p\u003e\n\u003cp\u003eFront Ball Bearing: steel\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: rear\u003c\/p\u003e\n\u003cp\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004312838438,"sku":"UR3401-MR2C1","price":800.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/combo-motor-ultimate-mxr-v2-ceramic-filtro-airmax-escape-efra-2141-supersonic.jpg?v=1777341423"},{"product_id":"ultimate-engine-mxr-v2-ceramic-w-airmax-filter-2142-supersonic-pipe-combo","title":"ULTIMATE ENGINE MXR v.2 CERAMIC W\/ AIRMAX FILTER \u0026 2142 SUPERSONIC PIPE COMBO","description":"\u003cp\u003eThis is the Combo of the Ultimate MXR v2 Ceramic 3 Transfer .21 Competition Engine with Ultimate Airmax Filter and Ultimate EFRA 2142 Suersonic Exhaust System. Like its predecessor the MXR, this engine is manufactured by the prestigious Japanese brand O.S. Engines, and it’s also based on their square stroke Speed B21 engine. \u003c\/p\u003e\n\u003cp\u003eApart from the modifications that the MXR already had, such as the crankshaft, the back plate, the modified sleeve and the innovative FlowMax venturi in 6 and 6.5mm, the v2 version comes with a modified crankcase. All these changes have been made to improve performance, more specifically, to achieve greater power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eWith this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines you can find on the market.\u003c\/p\u003e\n\u003cp\u003eCOOLING HEAD\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 is equipped with the same cooling head as its predecessors (MXS, MTS, MXR). This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003cp\u003eCARBURETOR\u003c\/p\u003e\n\u003cp\u003eOnce again, the MXR v2 comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe carb comes with the Dust Cover Ring from Ultimate Racing. This ring has been designed to guarantee the best sealing of the carburetor.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/p\u003e\n\u003cp\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003eBACKPLATE\u003c\/p\u003e\n\u003cp\u003eSame as in the MXR, the v2 backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It has been milled to improve the gas flow going to the piston and improving engine efficiency and performance.\u003c\/p\u003e\n\u003cp\u003eThanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.\u003c\/p\u003e\n\u003cp\u003eCRANKSHAFT\u003c\/p\u003e\n\u003cp\u003eThe crankshaft features DLC treatment and 2 tungsten weights to increase rotational inertia and improve mid-rev feel. \u003c\/p\u003e\n\u003cp\u003eBEARINGS\u003c\/p\u003e\n\u003cp\u003eIt comes with the original OS ceramic bearing in the rear and Ultimate Racing steel double sealed in the front.\u003c\/p\u003e\n\u003cp\u003eVENTURI\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 comes with a 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/p\u003e\n\u003cp\u003eSLEEVE AND PISTON\u003c\/p\u003e\n\u003cp\u003eStarting from the great base of the MXS, the sleeve has been modified, modifying the ports to be able to vary the inlet and exhaust timing to achieve more power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power.\u003c\/p\u003e\n\u003cp\u003eBoth, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/p\u003e\n\u003cp\u003eCRANKCASE\u003c\/p\u003e\n\u003cp\u003eThis engine includes a new crankcase to improve the internal flow of fuel with the aim of improving performance by achieving extra power. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAIRMAX AIR FILTER\u003c\/p\u003e\n\u003cp\u003eThe AIRMAX concept is to achieve maximum airflow to the carburetor, while respecting the external dimensions of the filter to try to fit most of the 1\/8 offroad cars and bodies. This is achieved by means of a short, large-diameter tapered rubber connector tube that accelerates airflow and an internal filter structure with a larger surface area, without compromising engine protection. The result is a noticeable increase in engine power and performance.\u003c\/p\u003e\n\u003cp\u003eThe rubber connector tube is highly resistant to prevent unwanted damage.\u003c\/p\u003e\n\u003cp\u003eThe filter is supplied with a pre-oiled single layer foams, and includes a filter cover with pre-marked holes that can be used on rainy days.\u003c\/p\u003e\n\u003cp\u003eIncludes 2 adjustable plastic brakets to fit different cars. One is to fix it higher or lower. The other is to fix it closer or further horizontally. Both brackets have adjustable holes to give some leeway for easy adjustment.\u003c\/p\u003e\n\u003cp\u003eIncludes 4 screws and 2 plastic ties for complete mounting of the filter and brackets.\u003c\/p\u003e\n\u003cp\u003eULTIMATE EFRA 2142 OFF ROAD SUPERSONIC PIPE SET W\/ MANIFOLD\u003c\/p\u003e\n\u003cp\u003eIn this SUPERSONIC update, the gas flow has been improved to achieve a higher top end speed compared to its predecessor. \u003c\/p\u003e\n\u003cp\u003eThis pipe set provides a precise and linear throttle response in high RPM range with a great top end speed. This pipe set will provide great power and speed at high RPM.\u003c\/p\u003e\n\u003cp\u003eThis exhaust system includes the pipe, the manifold, 2 short springs, 2 medium springs, 2 long spring and 2 manifold gaskets.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3,49 cc\u003c\/p\u003e\n\u003cp\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/p\u003e\n\u003cp\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/p\u003e\n\u003cp\u003eBore x Stroke: 16,40x16,40mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003eRear Ball Bearing: ceramic\u003c\/p\u003e\n\u003cp\u003eFront Ball Bearing: steel\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: rear\u003c\/p\u003e\n\u003cp\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004312871206,"sku":"UR3401-MR2C2","price":800.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/combo-motor-ultimate-mxr-v2-ceramic-filtro-airmax-escape-efra-2142-supersonic.jpg?v=1777341316"},{"product_id":"ultimate-engine-mxr-v2-ceramic-team-edition-w-airmax-filter","title":"ULTIMATE ENGINE MXR v.2 CERAMIC \\TEAM EDITION\\\" W\/ AIRMAX FILTER\"","description":"\u003cp\u003eThis is the MXR v2 \"Team Edition\" engine with Airmax Filter from Ultimate Racing. The \"Team Edition\" concept uses the same Ultimate engines that are for sale, but the engines are assembled directly in our factory, completely broken-in and then thoroughly checked by our competition team to extract 100% of the performance of Ultimate engines.\u003c\/p\u003e\n\u003cp\u003eThere are many manufacturers that offer pre-break-in services performed on benches with propellers. The problem is that this method only works as a pre-break-in. It is still necessary to continue breaking in the engine on the track.\u003c\/p\u003e\n\u003cp\u003eAt Ultimate Racing we wanted to go a step further and offer our customers the possibility of purchasing fully broken-in and ready-to-race engines without the need for any additional break-in on track, i.e. engines that can be used in the most demanding competitions as you receive them, directly from the box.\u003c\/p\u003e\n\u003cp\u003eTo ensure quality and that all \"Team Edition\" engines are broken-in exactly the same, we have evolved a fully monitored break-in bench where temperature, RPM and break-in time are controlled at all times. The whole break-in process is performed with the engine perfectly lubricated to minimize the loads and wear of all the parts, significantly increasing its useful life.\u003c\/p\u003e\n\u003cp\u003eDuring each of the break-in stages the engine's resistance torque is also controlled. Using this parameter, we know when the engine break-in is finished, ensuring that all of our \"Team Edition\" engines are perfectly broken-in and ready to compete.\u003c\/p\u003e\n\u003cp\u003eOnce the break-in process has completed, the engines are dismantled, checked piece by piece and assembled again by our competition team, thus ensuring the highest quality of product reaches our customers.\u003c\/p\u003e\n\u003cp\u003eThis engine is manufactured by the prestigious Japanese brand O.S. Engines, with the following characteristics:\u003c\/p\u003e\n\u003cp\u003eCOOLING HEAD\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 is equipped with the same cooling head as its predecessors (MXS, MTS, MXR). This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003cp\u003eCARBURETOR\u003c\/p\u003e\n\u003cp\u003eOnce again, the MXR v2 comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe carb comes with the Dust Cover Ring from Ultimate Racing. This ring has been designed to guarantee the best sealing of the carburetor.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/p\u003e\n\u003cp\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003eBACKPLATE\u003c\/p\u003e\n\u003cp\u003eSame as in the MXR, the v2 backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It has been milled to improve the gas flow going to the piston and improving engine efficiency and performance.\u003c\/p\u003e\n\u003cp\u003eThanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.\u003c\/p\u003e\n\u003cp\u003eCRANKSHAFT\u003c\/p\u003e\n\u003cp\u003eThe crankshaft features DLC treatment and 2 tungsten weights to increase rotational inertia and improve mid-rev feel. \u003c\/p\u003e\n\u003cp\u003eBEARINGS\u003c\/p\u003e\n\u003cp\u003eIt comes with the original OS ceramic bearing in the rear and Ultimate Racing steel double sealed in the front.\u003c\/p\u003e\n\u003cp\u003eVENTURI\u003c\/p\u003e\n\u003cp\u003eThe MXR v2 comes with a 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/p\u003e\n\u003cp\u003eSLEEVE AND PISTON\u003c\/p\u003e\n\u003cp\u003eStarting from the great base of the MXS, the sleeve has been modified, modifying the ports to be able to vary the inlet and exhaust timing to achieve more power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power.\u003c\/p\u003e\n\u003cp\u003eBoth, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/p\u003e\n\u003cp\u003eCRANKCASE\u003c\/p\u003e\n\u003cp\u003eThis engine includes a new crankcase to improve the internal flow of fuel with the aim of improving performance by achieving extra power. \u003c\/p\u003e\n\u003cp\u003eAIRMAX AIR FILTER\u003c\/p\u003e\n\u003cp\u003eThe AIRMAX concept is to achieve maximum airflow to the carburetor, while respecting the external dimensions of the filter to try to fit most of the 1\/8 offroad cars and bodies. This is achieved by means of a short, large-diameter tapered rubber connector tube that accelerates airflow and an internal filter structure with a larger surface area, without compromising engine protection. The result is a noticeable increase in engine power and performance.\u003c\/p\u003e\n\u003cp\u003eThe rubber connector tube is highly resistant to prevent unwanted damage.\u003c\/p\u003e\n\u003cp\u003eThe filter is supplied with a pre-oiled single layer foams, and includes a filter cover with pre-marked holes that can be used on rainy days.\u003c\/p\u003e\n\u003cp\u003eIncludes 2 adjustable plastic brakets to fit different cars. One is to fix it higher or lower. The other is to fix it closer or further horizontally. Both brackets have adjustable holes to give some leeway for easy adjustment.\u003c\/p\u003e\n\u003cp\u003eIncludes 4 screws and 2 plastic ties for complete mounting of the filter and brackets.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3,49 cc\u003c\/p\u003e\n\u003cp\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/p\u003e\n\u003cp\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/p\u003e\n\u003cp\u003eBore x Stroke: 16,40x16,40mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003eRear Ball Bearing: ceramic\u003c\/p\u003e\n\u003cp\u003eFront Ball Bearing: steel\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: rear\u003c\/p\u003e\n\u003cp\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004312903974,"sku":"UR3401-MR2X","price":770.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxr-v2-ceramic-team-edition-filtro-airmax.jpg?v=1777341198"},{"product_id":"ultimate-engine-mxr-ceramic-w-airmax-filter-2141-supersonic-pipe-combo","title":"ULTIMATE ENGINE MXR CERAMIC W\/ AIRMAX FILTER \u0026 2141 SUPERSONIC PIPE COMBO","description":"\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThis is the Ultimate MXR Ceramic 3 Transfer .21 Competition Engine Combo with Ultimate Airmax Filter and 2141 Supersonic Ultimate pipe combo. Like its predecessor the MXS, this engine is manufactured by the prestigious Japanese brand O.S. Engines, in this case based on their square stroke Speed B21 engine. Apart from the modifications that the MXS already had, such as the crankshaft and back plate, the sleeve of the MXR has been modified, modifying the ports to be able to vary the inlet and exhaust timing. The inner head has also been modified and includes the innovative FlowMax venturi to improve performance, more specifically, to achieve greater power without compromising fuel consumption.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eWith this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines you can find on the market.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCOOLING HEAD\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe MXR is equipped with the same cooling head as its predecessors (MXS, MTS). This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCARBURETOR\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eOnce again, the MXR comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBACKPLATE\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eSame as in the MXS, the MXR backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It has been milled to improve the gas flow going to the piston and improving engine efficiency and performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCRANKSHAFT\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe MXR crankshaft features DLC treatment and 2 tungsten weights to increase rotational inertia and improve mid-rev feel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBEARINGS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe MXR comes with the original OS ceramic bearing in the rear and Ultimate Racing steel double sealed in the front.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eVENTURI\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"en-us\"\u003eThe MXR comes with the 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eSLEEVE AND PISTON\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eStarting from the great base of the MXS, the sleeve of the MXR has been modified, modifying the ports to be able to vary the inlet and exhaust timing to achieve more power without compromising fuel consumption.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBoth, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eTECHNICAL SPECIFICATIONS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eDisplacement: 3,49 cc\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBore x Stroke: 16,40x16,40mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eSleeve: 3 + 1 ports\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eRear Ball Bearing: ceramic\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eFront Ball Bearing: steel\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCrankshaft: 14 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCarburetor: 21 J3\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eGlow plug: P3 Turbo\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eExhaust Position: rear\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/span\u003e\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004312969510,"sku":"UR3401-MXRC1","price":800.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxr-ceramic-escape-efra-2141.jpg?v=1777341072"},{"product_id":"ultimate-engine-mxr-ceramic-w-airmax-filter-2142-supersonic-pipe-combo","title":"ULTIMATE ENGINE MXR CERAMIC W\/ AIRMAX FILTER \u0026 2142 SUPERSONIC PIPE COMBO","description":"\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThis is the Ultimate MXR Ceramic 3 Transfer .21 Competition Engine Combo with Ultimate Airmax filter and Ultimate 2142 Supersonic pipe combo. Like its predecessor the MXS, this engine is manufactured by the prestigious Japanese brand O.S. Engines, in this case based on their square stroke Speed B21 engine. Apart from the modifications that the MXS already had, such as the crankshaft and back plate, the sleeve of the MXR has been modified, modifying the ports to be able to vary the inlet and exhaust timing. The inner head has also been modified and includes the innovative FlowMax venturi to improve performance, more specifically, to achieve greater power without compromising fuel consumption.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eWith this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines you can find on the market.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCOOLING HEAD\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe MXR is equipped with the same cooling head as its predecessors (MXS, MTS). This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCARBURETOR\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eOnce again, the MXR comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBACKPLATE\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eSame as in the MXS, the MXR backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It has been milled to improve the gas flow going to the piston and improving engine efficiency and performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCRANKSHAFT\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe MXR crankshaft features DLC treatment and 2 tungsten weights to increase rotational inertia and improve mid-rev feel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBEARINGS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe MXR comes with the original OS ceramic bearing in the rear and Ultimate Racing steel double sealed in the front.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eVENTURI\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"en-us\"\u003eThe MXR comes with the 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eSLEEVE AND PISTON\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eStarting from the great base of the MXS, the sleeve of the MXR has been modified, modifying the ports to be able to vary the inlet and exhaust timing to achieve more power without compromising fuel consumption.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBoth, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eTECHNICAL SPECIFICATIONS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eDisplacement: 3,49 cc\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eBore x Stroke: 16,40x16,40mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eSleeve: 3 + 1 ports\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eRear Ball Bearing: ceramic\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eFront Ball Bearing: steel\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCrankshaft: 14 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eCarburetor: 21 J3\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eGlow plug: P3 Turbo\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eExhaust Position: rear\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"en-us\"\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/span\u003e\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004313002278,"sku":"UR3401-MXRC2","price":800.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxr-ceramic-escape-efra-2142.jpg?v=1777340891"},{"product_id":"ultimate-engine-mxz-w-airmax-filter","title":"ULTIMATE ENGINE MXZ W\/ AIRMAX FILTER","description":"\u003cp\u003eThis is the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate MXZ 3 Transfers Long Stroke .21 Engine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate Airmax Air Filter\u003c\/strong\u003e. This engine is manufactured with the following characteristics:\u003c\/p\u003e\n\u003ch2\u003eCooling Head\u003c\/h2\u003e\n\u003cp\u003eThe MXZ is equipped with the same cooling head as its predecessors. This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003ch2\u003eCarburetor\u003c\/h2\u003e\n\u003cp\u003eOnce again, the MXZ comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently making it more stable with great idle stability, improved fuel mileage, and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easily adjust the angle of the uniball joint without having to disassemble the engine. This carb offers higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003ch2\u003eCrankshaft\u003c\/h2\u003e\n\u003cp\u003eThe MXZ comes with a 14mm crankshaft with a teardrop-shaped opening and paste in the inlet for improved flow.\u003c\/p\u003e\n\u003ch2\u003eBearings\u003c\/h2\u003e\n\u003cp\u003eThe MXZ comes with the original OS steel bearing in the rear and Ultimate Racing double-sealed steel in the front.\u003c\/p\u003e\n\u003ch2\u003eVenturi\u003c\/h2\u003e\n\u003cp\u003eThe MXZ comes with the 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, it ensures the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence, improves fuel mileage.\u003c\/p\u003e\n\u003ch2\u003eSleeve and Piston\u003c\/h2\u003e\n\u003cp\u003eThe sleeve with 3 inlet ports and an exhaust port guarantees low fuel consumption with very high but smooth and linear power. Both the sleeve and piston are made from a high-strength aluminum bar to improve durability.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3.49 cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e16.27 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e16.80 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleeve:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3 + 1 ports\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical RPM range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4,000 – 40,500 rpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax. power output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.55 hp at 34,000 rpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e350 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e14 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e21 J3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlow plug:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eP3 Turbo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Position:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRear\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004313035046,"sku":"UR3401-MXZ","price":480.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxz-filtro-airmax.jpg?v=1777340682"},{"product_id":"ultimate-engine-mxz-w-airmax-filter-2142-super-strong-one-piece-pipe-combo","title":"ULTIMATE ENGINE MXZ W\/ AIRMAX FILTER \u0026 2142 SUPER STRONG ONE-PIECE PIPE COMBO","description":"\u003cp\u003eThis is the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate MXZ 3 Transfers Long Stroke .21 Engine Combo\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate Airmax Air Filter\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate 2142 Superstrong One-Piece pipe combo\u003c\/strong\u003e. This engine is manufactured with the following characteristics:\u003c\/p\u003e\n\u003ch2\u003eCooling Head\u003c\/h2\u003e\n\u003cp\u003eThe MXZ is equipped with the same cooling head as its predecessors. This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003ch2\u003eCarburetor\u003c\/h2\u003e\n\u003cp\u003eOnce again, the MXZ comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine. This carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003ch2\u003eCrankshaft\u003c\/h2\u003e\n\u003cp\u003eThe MXZ comes with a 14mm crankshaft with teardrop-shaped opening and paste in the inlet for improved flow.\u003c\/p\u003e\n\u003ch2\u003eBearings\u003c\/h2\u003e\n\u003cp\u003eThe MXZ comes with the original OS steel bearing in the rear and Ultimate Racing double sealed steel in the front.\u003c\/p\u003e\n\u003ch2\u003eVenturi\u003c\/h2\u003e\n\u003cp\u003eThe MXZ comes with the 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/p\u003e\n\u003ch2\u003eSleeve and Piston\u003c\/h2\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power. Both, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3.49 cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e16.27 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e16.80 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleeve:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3 + 1 ports\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical RPM range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4,000 – 40,500 rpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax. power output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.55 hp at 34,000 rpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e350 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e14 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e21 J3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlow plug:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eP3 Turbo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Position:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erear\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004313067814,"sku":"UR3401-MXZC3","price":580.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxz-filtro-airmax-escape-efra-2142-super-strong-one-piece.jpg?v=1777340578"},{"product_id":"ultimate-mxz-team-edition-w-airmax-filter-2142-super-strong-one-piece-pipe-combo","title":"ULTIMATE MXZ \\TEAM EDITION\\\" W\/ AIRMAX FILTER \u0026 2142 SUPER STRONG ONE-PIECE PIPE COMBO\"","description":"\u003cp\u003eThis is the \"Team Edition\" Ultimate MXZ 3 Transfers Long Stroke .21 Engine Combo with the Ultimate Airmax Air Filter and Ultimate 2142 Superstrong One-Piece pipe combo. This engine is manufactured with the following characteristics:\u003c\/p\u003e\n\u003cp\u003eCooling Head\u003c\/p\u003e\n\u003cp\u003eThe MXZ is equipped with the same cooling head as its predecessors. This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003cp\u003eCarburetor\u003c\/p\u003e\n\u003cp\u003eOnce again, the MXZ comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine. This carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003eCrankshaft\u003c\/p\u003e\n\u003cp\u003eThe MXZ comes with a 14mm crankshaft with teardrop-shaped opening and paste in the inlet for improved flow.\u003c\/p\u003e\n\u003cp\u003eBearings\u003c\/p\u003e\n\u003cp\u003eThe MXZ comes with the original OS steel bearing in the rear and Ultimate Racing double sealed steel in the front.\u003c\/p\u003e\n\u003cp\u003eVenturi\u003c\/p\u003e\n\u003cp\u003eThe MXZ comes with the 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, unlike all others, makes the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence improves fuel mileage.\u003c\/p\u003e\n\u003cp\u003eSleeve and Piston\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantees a low fuel consumption with a very high but smooth and linear power. Both, the sleeve and piston are made from a high strength aluminum bar to improve its durability.\u003c\/p\u003e\n\u003cp\u003eTechnical Specifications\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3.49 cc\u003c\/p\u003e\n\u003cp\u003eBore: 16.27 mm\u003c\/p\u003e\n\u003cp\u003eStroke: 16.80 mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003ePractical RPM range: 4,000 – 40,500 rpm\u003c\/p\u003e\n\u003cp\u003eMax. power output: 2.55 hp at 34,000 rpm\u003c\/p\u003e\n\u003cp\u003eWeight: 350 g\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: rear\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004313100582,"sku":"UR3401-MXZC3X","price":640.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxz-team-edition-filtro-airmax-escape-efra-2142-super-strong-one-piece.jpg?v=1777340433"},{"product_id":"ultimate-engine-mxz-team-edition-w-airmax-filter","title":"ULTIMATE ENGINE MXZ \\TEAM EDITION W\/ AIRMAX FILTER","description":"\u003cp\u003eThis is the MXZ \"Team Edition\" engine with Airmax Filter from Ultimate Racing. The \"Team Edition\" concept uses the same Ultimate engines that are for sale, but the engines are assembled directly in our factory, completely broken-in and then thoroughly checked by our competition team to extract 100% of the performance of Ultimate engines.\u003c\/p\u003e\n\u003cp\u003eThere are many manufacturers that offer pre-break-in services performed on benches with propellers. The problem is that this method only works as a pre-break-in. It is still necessary to continue breaking in the engine on the track.\u003c\/p\u003e\n\u003cp\u003eAt Ultimate Racing we wanted to go a step further and offer our customers the possibility of purchasing fully broken-in and ready-to-race engines without the need for any additional break-in on track, i.e. engines that can be used in the most demanding competitions as you receive them, directly from the box.\u003c\/p\u003e\n\u003cp\u003eTo ensure quality and that all \"Team Edition\" engines are broken-in exactly the same, we have evolved a fully monitored break-in bench where temperature, RPM and break-in time are controlled at all times. The whole break-in process is performed with the engine perfectly lubricated to minimize the loads and wear of all the parts, significantly increasing its useful life.\u003c\/p\u003e\n\u003cp\u003eDuring each of the break-in stages the engine's resistance torque is also controlled. Using this parameter, we know when the engine break-in is finished, ensuring that all of our \"Team Edition\" engines are perfectly broken-in and ready to compete.\u003c\/p\u003e\n\u003cp\u003eOnce the break-in process has completed, the engines are dismantled, checked piece by piece and assembled again by our competition team, thus ensuring the highest quality of product reaches our customers.\u003c\/p\u003e\n\u003cp\u003eThis engine is manufactured by the prestigious Japanese brand O.S. Engines, with the following characteristics:\u003c\/p\u003e\n\u003cp\u003eCooling Head\u003c\/p\u003e\n\u003cp\u003eThe MXZ is equipped with the same cooling head as its predecessors. This 8-fin cooling head has a very low center of gravity and has been designed to focus most of the airflow directly to the glow plug. By cooling the glow plug we get a more stable carburetion and idle.\u003c\/p\u003e\n\u003cp\u003eCarburetor\u003c\/p\u003e\n\u003cp\u003eOnce again, the MXZ comes with the 21 J3 carburetor. Unlike the original OS carburetor, its high-speed needle holder was redesigned for better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently making it more stable with great idle stability, improved fuel mileage, and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easily adjust the angle of the uniball joint without having to disassemble the engine. This carb offers higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003eCrankshaft\u003c\/p\u003e\n\u003cp\u003eThe MXZ comes with a 14mm crankshaft with a teardrop-shaped opening and paste in the inlet for improved flow.\u003c\/p\u003e\n\u003cp\u003eBearings\u003c\/p\u003e\n\u003cp\u003eThe MXZ comes with the original OS steel bearing in the rear and Ultimate Racing double-sealed steel in the front.\u003c\/p\u003e\n\u003cp\u003eVenturi\u003c\/p\u003e\n\u003cp\u003eThe MXZ comes with the 6.5mm Ultimate Racing FLOWMAX venturi. With an innovative design, longer than the standard O.S. venturis and wider at the base, it ensures the inferior part of the venturi and the carburetor have exactly the same diameter. This new geometry improves fluid dynamics, providing extra power that allows the use of smaller venturis without decreasing power, and as a consequence, improves fuel mileage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSleeve and Piston\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet ports and an exhaust port guarantees low fuel consumption with very high but smooth and linear power. Both the sleeve and piston are made from a high-strength aluminum bar to improve durability.\u003c\/p\u003e\n\u003cp\u003eTechnical Specifications\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3.49 cc\u003c\/p\u003e\n\u003cp\u003eBore: 16.27 mm\u003c\/p\u003e\n\u003cp\u003eStroke: 16.80 mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003ePractical RPM range: 4,000 – 40,500 rpm\u003c\/p\u003e\n\u003cp\u003eMax. power output: 2.55 hp at 34,000 rpm\u003c\/p\u003e\n\u003cp\u003eWeight: 350 g\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: Rear\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004313133350,"sku":"UR3401-MXZX","price":580.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/motor-ultimate-mxz-team-edition-filtro-airmax_1.jpg?v=1777340281"},{"product_id":"ultimate-engine-r36-robert-batlle-edition-ceramic-combo","title":"ULTIMATE ENGINE R36 ROBERT BATLLE EDITION CERAMIC COMBO","description":"\u003cp\u003eRobert Batlle \u0026amp; Ultimate Racing: A Legendary Partnership That Keeps Making History\u003c\/p\u003e\n\u003cp\u003eRobert Batlle, one of the most iconic names in the world of RC, is also the longest-standing driver on the Ultimate Racing team. As he puts it:\u003c\/p\u003e\n\u003cp\u003e“Over 25 years working side by side, pushing the limits and achieving major victories like the 2012 World Championship, three European titles, and many other prestigious international wins.”\u003c\/p\u003e\n\u003cp\u003eAnd now, in 2025… we’re raising the bar once again!\u003c\/p\u003e\n\u003cp\u003eIntroducing the new Ultimate R36 engine, the result of years of development between Robert and our technical team. This engine represents the perfect balance: smooth, easy to drive, and with fuel efficiency that will blow your mind.\u003c\/p\u003e\n\u003cp\u003eRobert says it best:\u003c\/p\u003e\n\u003cp\u003e“I’m truly proud of this project. The R36 is super smooth and linear, and with the Supersonic 2141 pipe, the on-track feeling is just insane. And the fuel efficiency? Out of this world!”\u003c\/p\u003e\n\u003cp\u003eThe Ultimate Combo?\u003c\/p\u003e\n\u003cp\u003eThe new R36 comes paired with the Supersonic 2141 exhaust with ceramic treatment, our great FlowMax venturi, our renowned AIRMAX air filter, and a custom exhaust mount — all designed to squeeze out maximum performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eENGINE\u003c\/p\u003e\n\u003cp\u003eManufactured by the prestigious O.S. Engines, the R36 is based on the square-stroke Speed B21, evolving from the previous MXS with key upgrades: new intake and exhaust timing, a redesigned backplate, and an optimized crankcase.\u003c\/p\u003e\n\u003cp\u003eIt features a sealed combustion chamber with an O-ring for flawless sealing and maximum linearity. And yes — the FlowMax venturi is included, making this a truly elite package.\u003c\/p\u003e\n\u003cp\u003eThe result?\u003c\/p\u003e\n\u003cp\u003eA power curve that’s smooth yet explosive when needed, delivering responsive and consistent performance through every turn — and one of the best idles on the market.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCOOLING HEAD\u003c\/p\u003e\n\u003cp\u003eThe 8-fin head is the same proven design found on our current engines, but with a unique look that makes it stand out. With a low center of gravity and an airflow-optimized shape that directs cooling straight to the glow plug, it ensures more stable carb tuning and idle — even under extreme conditions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCARBURETOR\u003c\/p\u003e\n\u003cp\u003eThe O.S. 21 J3 carb has been refined with a custom high-speed needle holder featuring head-style fins to help maintain a cooler, more stable temperature — boosting both performance and efficiency. Unlike the original OS carburetor, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it is more stable with a great idle stability, improves fuel mileage and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe carb comes with the Dust Cover Ring from Ultimate Racing. This ring has been designed to guarantee the best sealing of the carburetor.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine.\u003c\/p\u003e\n\u003cp\u003eFor those who love to fine-tune, this carb delivers ultra-precise adjustments, ideal for expert drivers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBACKPLATE\u003c\/p\u003e\n\u003cp\u003eCNC-machined from Swiss 7075-T6 aluminum, the new backplate features larger cutouts to improve fuel flow and boost power.\u003c\/p\u003e\n\u003cp\u003eIts smart design allows for safe removal — even with the piston at bottom dead center — without any special tools or risk of damage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCRANKSHAFT\u003c\/p\u003e\n\u003cp\u003eCoated with DLC and equipped with two tungsten counterweights, the crankshaft improves rotational inertia, delivering smoother mid-range response and more progressive throttle feel.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBEARINGS\u003c\/p\u003e\n\u003cp\u003eAt the rear, an original O.S. ceramic bearing. At the front, a steel double-sealed Ultimate Racing bearing.\u003c\/p\u003e\n\u003cp\u003eThis combo ensures exceptional smoothness and long-lasting durability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eVENTURI\u003c\/p\u003e\n\u003cp\u003eThe engine includes two FlowMax venturis (6.0 and 6.5 mm) with a new design: longer and with a wider base, they fit perfectly into the carb, optimizing internal flow.\u003c\/p\u003e\n\u003cp\u003eThe result?\u003c\/p\u003e\n\u003cp\u003eMore power with smaller venturis, meaning better fuel mileage without sacrificing performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSLEEVE \u0026amp; PISTON\u003c\/p\u003e\n\u003cp\u003eBuilding on the MXS platform, we’ve redesigned the engine internals with new porting and timing to unlock more power — without hurting fuel consumption.\u003c\/p\u003e\n\u003cp\u003eThe 3-transfer intake and single exhaust port layout delivers smooth, efficient, and highly usable power. Both the sleeve and piston are made from high-grade aluminum bar stock for maximum longevity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCRANKCASE\u003c\/p\u003e\n\u003cp\u003eThe crankcase has been reworked internally to improve fuel flow and boost performance. Laser-engraved with Robert’s signature “36” and the limited edition number, it’s as exclusive as it is functional.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEXHAUST\u003c\/p\u003e\n\u003cp\u003eThe new Supersonic 2141 pipe delivers ultra-smooth throttle response, a distinctive sound, and a ceramic finish that looks great and holds up over time — without compromising performance.\u003c\/p\u003e\n\u003cp\u003eReady to Take Your RC Car to the Next Level?\u003c\/p\u003e\n\u003cp\u003eWith the Ultimate R36 + Supersonic 2141 combo, you get it all:\u003c\/p\u003e\n\u003cp\u003ePower, reliability, style, efficiency… and most importantly: a champion’s DNA.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3,49 cc\u003c\/p\u003e\n\u003cp\u003ePower Output: 2.65 PS\/2.61 hp @ 34,000 rpm\u003c\/p\u003e\n\u003cp\u003ePractical Range RPM: 4,000 - 42,000 rpm\u003c\/p\u003e\n\u003cp\u003eBore x Stroke: 16,40x16,40mm\u003c\/p\u003e\n\u003cp\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003eRear Ball Bearing: ceramic\u003c\/p\u003e\n\u003cp\u003eFront Ball Bearing: steel\u003c\/p\u003e\n\u003cp\u003eCrankshaft: 14 mm\u003c\/p\u003e\n\u003cp\u003eCarburetor: 21 J3\u003c\/p\u003e\n\u003cp\u003eGlow plug: P3 Turbo\u003c\/p\u003e\n\u003cp\u003eExhaust Position: rear\u003c\/p\u003e\n\u003cp\u003eFuel type: Recommended Nitrolux Energy3 16%-25%.\u003c\/p\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":53004313166118,"sku":"UR3401-R36","price":1000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5972\/3558\/files\/combo-motor-ultimate-r36-robert-batlle-edition-ceramic.jpg?v=1777337865"},{"product_id":"ultimate-engine-r36-robert-batlle-v2-team-edition-ceramic-wcomplete-clutch-set-bell","title":"ULTIMATE ENGINE R36 ROBERT BATLLE V2 \\TEAM EDITION\\\" CERAMIC W\/COMPLETE CLUTCH SET \u0026 BELL\"","description":"\u003cp\u003eThis is the new Ultimate R36 Robert Batlle V2 “Team Edition” Ceramic engine.\u003c\/p\u003e\n\u003cp\u003eAfter the great success of the R36 Limited Edition, we now present the R36 V2 including the Compack 4 Pro B10 Clutch Kit and Z13 Clutch Bell with Bearings, AirMax Air Filter with Oiled Foam, Muffler Support Alu. Ring and two FlowMax Venturis of 5.75 mm and 6.5 mm.\u003c\/p\u003e\n\u003cp\u003eIn this case, it is also a “Team Edition”, meaning a fully run-in and pre-carbureted engine, ready to compete at the highest level. During each phase of the break-in process, the engine’s resistance torque is carefully monitored, allowing us to determine the optimal moment to finish the break-in. This guarantees that all our “Team Edition” engines are perfectly run-in and race-ready.\u003c\/p\u003e\n\u003cp\u003eOnce the break-in is completed, the engines are fully disassembled, inspected part by part, and reassembled by our racing team, ensuring the highest possible quality for the product delivered to our customers.\u003c\/p\u003e\n\u003cp\u003eENGINE\u003c\/p\u003e\n\u003cp\u003eManufactured by the prestigious O.S. Engines, the R36 V2—like the previous version—is based on the square-stroke Speed B21, featuring new intake and exhaust timings, a redesigned rear cover, and an optimized crankcase.\u003c\/p\u003e\n\u003cp\u003eThe cooling head insert includes an O-ring for perfect sealing and maximum linearity. And yes, the FlowMax venturi is also present, completing a truly elite package.\u003c\/p\u003e\n\u003cp\u003eResult: a smooth power curve, explosive when you need it and perfectly controllable. An engine that responds precisely at every throttle input, with one of the best idle performances on the market.\u003c\/p\u003e\n\u003cp\u003eCOOLING HEAD\u003c\/p\u003e\n\u003cp\u003eThe 8-fin cooling head is the same one used on our current engines, but with an exclusive design that makes the difference. With a low center of gravity and aerodynamics focused on direct spark plug cooling, it improves carburetion and idle stability, even under extreme conditions.\u003c\/p\u003e\n\u003cp\u003eCARBURETOR\u003c\/p\u003e\n\u003cp\u003eThe O.S. 21 J3 carburetor has been redesigned with a high-speed needle holder featuring cooling fins similar to a cylinder head, maintaining a lower and more stable temperature for improved performance and efficiency.\u003c\/p\u003e\n\u003cp\u003eIt includes details such as a red anodized rubber boot ring for perfect sealing and a new throttle barrel arm with double set screws, allowing angle adjustment without removing the engine.\u003c\/p\u003e\n\u003cp\u003eFor those seeking ultimate fine-tuning, this carburetor offers an adjustment range worthy of the most demanding racers.\u003c\/p\u003e\n\u003cp\u003eREAR COVER\u003c\/p\u003e\n\u003cp\u003eCNC-machined from Swiss 7075-T6 aluminum, the new rear cover features larger fuel passages for increased fuel flow and power.\u003c\/p\u003e\n\u003cp\u003eIts design allows easy removal, even with the piston at bottom dead center, without special tools or risk of damage.\u003c\/p\u003e\n\u003cp\u003eCRANKSHAFT\u003c\/p\u003e\n\u003cp\u003eDLC-coated and equipped with two tungsten counterweights, the crankshaft provides greater inertia, improving mid-range response and delivering a smoother, more progressive engine feel.\u003c\/p\u003e\n\u003cp\u003eBEARINGS\u003c\/p\u003e\n\u003cp\u003eAt the rear, an original O.S. ceramic bearing. At the front, a steel bearing with double shields from Ultimate Racing. A combination that ensures smoothness and durability.\u003c\/p\u003e\n\u003cp\u003eVENTURI\u003c\/p\u003e\n\u003cp\u003eIncludes two longer FlowMax venturis (5.75 mm and 6.5 mm) with a wider base, perfectly matched to the carburetor to optimize airflow.\u003c\/p\u003e\n\u003cp\u003eThe result? More power with smaller venturis, translating into better fuel efficiency without sacrificing performance.\u003c\/p\u003e\n\u003cp\u003eSLEEVE AND PISTON\u003c\/p\u003e\n\u003cp\u003eLike its predecessor, it features new transfer ports and new timings—everything designed to extract more power without compromising fuel consumption.\u003c\/p\u003e\n\u003cp\u003eThe 3 intake + 1 exhaust port design provides a smooth, stable, and highly usable power delivery. Made from high-quality aluminum, they are built to last.\u003c\/p\u003e\n\u003cp\u003eCRANKCASE\u003c\/p\u003e\n\u003cp\u003eThe crankcase has also been optimized to improve internal airflow. Laser-engraved with Robert’s number 36, it is a component that is both functional and exclusive.\u003c\/p\u003e\n\u003cp\u003eEXHAUST\u003c\/p\u003e\n\u003cp\u003eThe new Supersonic 2141 delivers a very linear response, a unique sound, and a ceramic coating that not only enhances aesthetics but also maintains performance for longer.\u003c\/p\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e \u003c\/span\u003eDisplacement: 3.49 cc\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e \u003c\/span\u003ePower RPM: 2.65 PS \/ 2.61 hp @ 34,000 rpm\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e \u003c\/span\u003ePractical Range: 4,000 – 42,000 rpm\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e \u003c\/span\u003eBore x Stroke: 16.40 x 16.40 mm\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e \u003c\/span\u003eSleeve: 3 + 1 ports\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e \u003c\/span\u003eRear bearing: Ceramic\u003c\/p\u003e\n\u003cp\u003e•\u003cspan\u003e 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