{"product_id":"ultimate-engine-mxr-v-3-ceramic-w-airmax-filter-2141-supersonic-pipe-combo","title":"ULTIMATE ENGINE MXR v.3 CERAMIC W\/ AIRMAX FILTER \u0026 2141 SUPERSONIC PIPE COMBO","description":"\u003cp\u003eThis is the\u003cstrong\u003e Ultimate MXR v3 Ceramic Competition Combo\u003c\/strong\u003e, a complete ready-to-fit package that includes the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate MXR v3 Ceramic Engine\u003c\/strong\u003e, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate Racing 2141 Super Sonic Exhaust\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUltimate Airmax Air Filter with oiled foam\u003c\/strong\u003e. All three components have been jointly selected and optimised to work as a single unit, extracting maximum performance in competition. The engine is manufactured by the prestigious Japanese brand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eO.S. Engines\u003c\/strong\u003e, based on their square-stroke Speed B21 racing engine.\u003c\/p\u003e\n\u003cp\u003eIn addition to the modifications already present in the previous version — the crankshaft, the rear crankcase cover, cylinder\/piston set, the innovative 6 and 6.5mm FlowMax venturi and the crankcase work to achieve greater power without compromising fuel consumption —\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003ethe v3 introduces a new, less sensitive high-speed needle that makes it easier to find the optimal tuning point.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith this combo you will have an incredible power curve delivering spectacular usable power at all times. It provides smooth, linear power at low RPM — making it perform perfectly on bumpy tracks — while delivering strong power at mid and high RPM with outstanding feel. It is one of the engines with the best idle on the market.\u003c\/p\u003e\n\u003ch3\u003eWhat is included in the combo:\u003c\/h3\u003e\n\u003cdiv class=\"combo-box\"\u003e\n\u003cp class=\"combo-title\"\u003eCombo contents\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate MXR v3 Ceramic Engine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— .21 competition engine with 3 transfers and all the exclusive MXR v3 series modifications detailed below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate Racing 2141 Super Sonic Exhaust\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— High-performance exhaust designed to complement the MXR v3 power curve, maximising gas scavenging and extending the usable power band in competition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate Airmax Air Filter with oiled foam\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— High-flow air filter with pre-oiled foam that ensures clean, efficient air intake from the very first run, protecting the engine and optimising carburation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eEngine highlights:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburettor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eModified OS21J3 carburettor with exclusive needle carrier and high-speed needle for more stable operation and more precise tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankcase:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSame as the v2, where the crankcase was reworked to improve internal fuel flow, delivering an extra margin of power and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll Ultimate MXR v3 engines include a complete Ultimate Airmax filter set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe Ultimate MXR v3 uses the same head as its predecessor. This 8-fin head has a very low centre of gravity and is designed to direct the majority of the airflow directly onto the glow plug. By cooling the plug, carburation and idle stability are both improved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenturi:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe MXR features the new 6.5mm FlowMax venturi. Its innovative design is longer than standard O.S. venturis and wider at the base. The new geometry improves fluid dynamics, delivering extra power and a notable improvement in engine run time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Cover:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe characteristic red crankcase cover of Ultimate engines is machined from Swiss 7075-T6 aluminium bar and features two enlarged ports that improve engine fuel flow, increasing power and improving consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiner and piston:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStarting from the solid MXS foundation, the Ultimate MXR engine assembly has been redesigned with modified transfers to alter intake and exhaust timing, achieving more power without compromising fuel consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe Ultimate MXR v3 uses an original O.S. Engines ceramic rear bearing and an Ultimate Racing dual-sealed steel front bearing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngine technical specifications:\u003c\/h3\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\u003eR.P.M. (power):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.65 PS @ 34,000 rpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSquare 16.40 x 16.40 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiner:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3 + 1 ports\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear bearing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eO.S. Ceramic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront bearing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUltimate Racing Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e14mm balanced with two tungsten counterweights\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburettor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eO.S. 21J3 modified with exclusive needle carrier\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\u003eEngine weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e345g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ultimate-Racing","offers":[{"title":"Default Title","offer_id":51313252434198,"sku":"UR3401-MR3C1","price":1350.0,"currency_code":"ILS","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/8971\/0870\/files\/combo-motor-ultimate-mxr-v3-ceramic-filtro-airmax-escape-efra-2141-supersonic.jpg?v=1778696481","url":"https:\/\/shop.kozzy.io\/products\/ultimate-engine-mxr-v-3-ceramic-w-airmax-filter-2141-supersonic-pipe-combo","provider":"Kozzy Racing","version":"1.0","type":"link"}