{"title":"Rotax Max E-Rave Power Valve System Parts","description":"","products":[{"product_id":"rotax-max-erave-stud-m6x52-5","title":"1. 441358 Rotax Max E-RAVE Power Valve Stud M6x52.5","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve Stud M6x52.5\u003c\/strong\u003e (R.441358) is the OEM mounting stud that anchors the E-RAVE exhaust power valve assembly to the cylinder on all Rotax 125 MAX EVO engines equipped with the E-RAVE system. Tightened to 10 Nm, this stud provides the primary threaded anchor point for the valve rod housing assembly. A damaged or stripped stud compromises the entire power valve mount and must be replaced before reassembling the E-RAVE system.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e — the E-RAVE system is fitted to these classes only. Not used on Mini MAX or Micro MAX engines.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.441358\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e M6 x 52.5mm, MK thread-locking stud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTightening Torque:\u003c\/strong\u003e 10 Nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the full Rotax E-RAVE power valve parts line for Senior and Junior MAX EVO engines.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140661469,"sku":"R.441358","price":14.64,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-exhaust-valve","title":"2. 253725 Rotax Max E-RAVE Exhaust Power Valve","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Exhaust Power Valve\u003c\/strong\u003e (R.253725) is the OEM exhaust valve poppet that controls exhaust port timing on Rotax 125 MAX EVO engines. This valve opens and closes under pneumatic pressure from the E-RAVE solenoid system, advancing exhaust port timing at higher RPM to broaden the power band. A worn or leaking exhaust valve causes loss of mid-to-top-end power, poor throttle response in the upper RPM range, and visible exhaust valve play when inspected during a power valve service.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Works inside the Valve Rod Housing (R.253385) in conjunction with the Exhaust Valve Piston (R.854440) and Bellow (R.260723).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.253725\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplace the exhaust valve at each major engine rebuild. CMC Karting stocks the complete Rotax E-RAVE power valve assembly and all individual components.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140694237,"sku":"R.253725","price":62.14,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-o-ring-6x2-5-red","title":"3. 230261 Rotax Max E-RAVE Power Valve O-Ring 6x2.5 Red","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve O-Ring 6x2.5 Red\u003c\/strong\u003e (R.230261) is the OEM NBR 70 sealing o-ring used in the E-RAVE exhaust valve assembly on all Rotax 125 MAX EVO engines. The distinctive red colour identifies it as a fuel\/oil-resistant compound. This o-ring seals the exhaust valve within the valve rod housing, preventing exhaust gas bypass around the valve body. A deteriorated o-ring causes exhaust gas leakage past the power valve, reducing power valve effectiveness and potentially causing hot gas ingress into the RAVE system.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Replace at every power valve service — it is included in the EVO Upgrade Kit E-Exhaust Valve (R.481260).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.230261\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e DIN 3771 – 6 x 2.5mm, NBR 70, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways replace this o-ring when servicing the power valve — it is an inexpensive part that protects much more costly components. CMC Karting stocks the full E-RAVE parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140727005,"sku":"R.230261","price":5.09,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-power-valve-gasket","title":"4. 250523 Rotax Max E-RAVE Power Valve Gasket","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve Gasket\u003c\/strong\u003e (R.250523) is the OEM sealing gasket used between the exhaust valve assembly and the cylinder on all Rotax 125 MAX EVO engines equipped with E-RAVE. This gasket ensures an exhaust-tight seal at the power valve mounting face, preventing hot exhaust gases from bypassing the valve and escaping into the RAVE system housing. Replace at every power valve removal — a reused gasket risks exhaust leaks that are difficult to diagnose and can damage adjacent components.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.250523\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt under $11, this gasket is mandatory replacement at each power valve service. CMC Karting stocks it alongside the full Rotax E-RAVE assembly parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140759773,"sku":"R.250523","price":10.76,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-valve-rod-housing","title":"5. 253385 Rotax Max E-RAVE Valve Rod Housing Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Valve Rod Housing Assembly\u003c\/strong\u003e (R.253385) is the OEM complete housing that contains the exhaust power valve (R.253725) and valve piston (R.854440) in the Rotax 125 MAX EVO E-RAVE system. This precision-machined housing guides the valve piston under pneumatic pressure from the solenoid, translating air pressure into valve movement to open and close the exhaust port at the correct RPM. A scored, cracked, or air-leaking valve rod housing causes erratic power valve operation and must be replaced to restore correct E-RAVE function.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Mounts to the cylinder via the Power Valve Stud (R.441358) and Gasket (R.250523). The complete valve assembly (R.481260 EVO Upgrade Kit) is the recommended overhaul path for heavily worn housings.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.253385\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the valve rod housing alongside the complete Rotax E-RAVE power valve assembly for full system rebuilds.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140792541,"sku":"R.253385","price":111.79,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-spring-washer-b6","title":"6. 845020 Rotax Max E-RAVE Spring Washer B6","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Spring Washer B6\u003c\/strong\u003e (R.845020) is the OEM lock washer used on the M6x25 Allen bolts (R.840866) that secure the valve rod housing assembly in the Rotax 125 MAX EVO E-RAVE system. Two of these spring washers are required per power valve assembly. The B6 spring washer provides vibration-resistant locking action to prevent the housing bolts from backing out under the significant thermal and mechanical cycling of the exhaust power valve environment.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.845020\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Spring Washer B6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e 2 per power valve assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt $0.32 each these are the cheapest part in the E-RAVE assembly — never skip them. CMC Karting stocks the full Rotax E-RAVE hardware line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140825309,"sku":"R.845020","price":0.32,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-allen-screw-m6x25","title":"7. 840866 Rotax Max E-RAVE Allen Screw M6x25","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Allen Screw M6x25\u003c\/strong\u003e (R.840866) is the OEM ISO 4762 Grade 8.8 socket head cap screw used to secure the E-RAVE valve rod housing to the cylinder on all Rotax 125 MAX EVO engines, tightened to 10 Nm. Two of these M6x25 bolts are used with Spring Washers B6 (R.845020) at the power valve housing mount. This fastener also appears in other locations across the Rotax engine and is one of the most commonly used bolts in the EVO assembly.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e E-RAVE system, and broadly across all Rotax 125 MAX EVO variants in other assembly locations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.840866\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e M6 x 25mm, ISO 4762, Grade 8.8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTightening Torque:\u003c\/strong\u003e 10 Nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO (E-RAVE application)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting carries the full Rotax OEM fastener line alongside all E-RAVE system components.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140890845,"sku":"R.840866","price":1.17,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-oil-seal-6x11","title":"8. 930500 Rotax Max E-RAVE Power Valve Oil Seal 6x11x3","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve Oil Seal 6x11x3\/4.5\u003c\/strong\u003e (R.930500) is the OEM shaft seal used inside the E-RAVE valve rod housing on all Rotax 125 MAX EVO engines. This precision oil seal prevents exhaust gas and combustion pressure from escaping past the valve rod into the RAVE control system, maintaining the correct pressure differential needed for reliable solenoid-actuated valve operation. A leaking valve shaft seal causes reduced power valve actuation force, erratic valve opening RPM, and potential solenoid damage from exhaust contamination.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Replace at every major power valve overhaul.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.930500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6 x 11 x 3\/4.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks this seal alongside the full Rotax E-RAVE valve rod housing rebuild components.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140923613,"sku":"R.930500","price":12.02,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-bellow-spring-small","title":"9. 838255 Rotax Max E-RAVE Bellow Spring Small 70mm","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Bellow Spring Small 70mm\u003c\/strong\u003e (R.838255) is the OEM small coil spring that controls the return tension of the power valve bellow (R.260723) in the Rotax 125 MAX EVO E-RAVE system. This spring sits inside the bellow assembly and ensures the valve piston returns to its resting position when solenoid pressure is released. A fatigued or broken small bellow spring causes the power valve to stick open or fail to return to the closed position, resulting in erratic power delivery and potential engine damage from incorrect exhaust port timing.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. The small spring (70mm, R.838255) works in conjunction with the large hose spring (134mm, R.939280) and the bellow (R.260723). Replace both springs together when servicing the bellow assembly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.838255\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 70 x 1.7 x 0.3mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks both E-RAVE bellow springs and the full power valve bellow assembly parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140956381,"sku":"R.838255","price":4.55,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-power-valve-bellow","title":"10. 260723 Rotax Max E-RAVE Power Valve Bellow","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve Bellow\u003c\/strong\u003e (R.260723) is the OEM green rubber bellows that forms the pneumatic actuator of the Rotax 125 MAX EVO E-RAVE power valve system. The bellow expands and contracts under pressure from the RAVE solenoid valve, physically moving the exhaust valve piston to open and close the exhaust port at the precise RPM point programmed into the ECU. A cracked, hardened, or punctured bellow causes immediate loss of power valve function — the exhaust port stays fixed, eliminating the RPM-variable exhaust timing that gives the Rotax MAX EVO its characteristic power curve.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Houses the small bellow spring (R.838255) and large hose spring (R.939280) internally. Inspect for cracks at every power valve service.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.260723\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Green\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe bellow is the most visible wear item in the E-RAVE system. CMC Karting keeps it in stock alongside both internal springs and the full power valve assembly parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139140989149,"sku":"R.260723","price":27.93,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-exhaust-valve-piston","title":"11. 854440 Rotax Max E-RAVE Exhaust Valve Piston","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Exhaust Valve Piston\u003c\/strong\u003e (R.854440) is the OEM plunger that translates pneumatic pressure from the bellow into mechanical movement of the exhaust valve inside the valve rod housing on all Rotax 125 MAX EVO engines. The piston travels within the valve rod housing bore and is the direct mechanical link between the pneumatic bellow and the exhaust valve itself. Tightening torque is 1–2 Nm — this is a precision-fit component and must be handled carefully. A worn or scored piston causes binding, inconsistent valve travel, and erratic power valve RPM response.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.854440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTightening Torque:\u003c\/strong\u003e 1–2 Nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the exhaust valve piston alongside the valve rod housing and full E-RAVE assembly parts for complete power valve overhauls.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141021917,"sku":"R.854440","price":29.09,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-bellow-spring-large","title":"12. 939280 Rotax Max E-RAVE Bellow Spring Large 134mm","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Bellow Spring Large 134mm\u003c\/strong\u003e (R.939280) is the OEM large coil spring that provides the primary return force for the power valve bellow (R.260723) in the Rotax 125 MAX EVO E-RAVE system. This heavier spring sets the baseline resistance that the solenoid must overcome to open the exhaust valve, effectively determining the RPM threshold at which the power valve begins to open. A fatigued or broken large bellow spring causes premature valve opening or failure to open, altering the engine's power curve and RPM characteristics.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Works alongside the small bellow spring (R.838255) inside the bellow assembly. Replace both springs whenever the bellow is serviced.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.939280\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 134 x 3.0 x 0.65mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks both E-RAVE bellow springs together so you can replace the complete spring set in one order.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141054685,"sku":"R.939280","price":7.9,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-compression-spring-48-5","title":"13. 239952 Rotax Max E-RAVE Compression Spring 48.5mm","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Compression Spring 48.5mm\u003c\/strong\u003e (R.239952) is the OEM valve cover compression spring used in the E-RAVE power valve assembly on all Rotax 125 MAX EVO engines. This spring loads the valve cover (R.911559) and maintains correct sealing pressure on the adjustment screw assembly (R.241220). A fatigued compression spring causes the valve cover to seat inconsistently, allowing air leaks in the adjustment circuit that affect solenoid trigger pressure and power valve response consistency.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.239952\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 48.5mm \/ 0.8mm wire diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplace at every valve cover service. CMC Karting stocks this spring alongside the valve cover and full E-RAVE assembly parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141152989,"sku":"R.239952","price":10.31,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-power-valve-cover","title":"14. 911559 Rotax Max E-RAVE Power Valve Cover","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve Cover\u003c\/strong\u003e (R.911559) is the OEM cap that seals the top of the valve rod housing on all Rotax 125 MAX EVO engines. The valve cover retains the compression spring (R.239952) and adjustment screw (R.241220) in position, sealing the upper end of the valve rod housing against air and exhaust gas leaks. A cracked, stripped, or improperly seated valve cover disrupts the pressure balance inside the housing, causing erratic power valve actuation and solenoid over-cycling.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Secured with two Taptite Screws M5x25 (R.241271).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.911559\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the valve cover alongside the adjustment screw, taptite screws, and complete E-RAVE housing rebuild parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141185757,"sku":"R.911559","price":30.73,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-taptite-screw-m5x25","title":"15. 241271 Rotax Max E-RAVE Taptite Screw M5x25","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Taptite Screw M5x25\u003c\/strong\u003e (R.241271) is the OEM self-tapping screw used to secure the valve cover (R.911559) to the valve rod housing on all Rotax 125 MAX EVO engines. Two of these Taptite screws are required per power valve assembly. The Taptite thread-forming design cuts its own thread on first installation — these screws should be replaced rather than reused, as a Taptite screw that has been removed and reinstalled may not achieve full clamping force.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.241271\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e M5 x 25mm, Taptite (thread-forming) screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e 2 per valve cover assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways use new Taptite screws when reinstalling the valve cover — they are single-use by design. CMC Karting stocks them alongside the complete E-RAVE valve housing rebuild components.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141218525,"sku":"R.241271","price":2.12,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-o-ring-15-9x2-3","title":"16. 430220 Rotax Max E-RAVE Valve Cover O-Ring 15.9x2.3","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Valve Cover O-Ring 15.9x2.3\u003c\/strong\u003e (R.430220) is the OEM sealing o-ring that sits between the valve cover (R.911559) and the valve rod housing on all Rotax 125 MAX EVO engines. This o-ring provides the air-tight seal at the top of the housing, preventing pressure loss from the valve adjustment circuit and ensuring consistent solenoid actuation force. A worn or compressed o-ring causes air leaks at the valve cover joint, reducing power valve response accuracy and consistency.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Replace at every valve cover removal.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.430220\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 15.9 x 2.3mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways replace this o-ring when the valve cover is removed — it is inexpensive and reusing it risks air leaks. CMC Karting stocks it with the full E-RAVE valve housing seal kit.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141251293,"sku":"R.430220","price":2.12,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-adjustment-screw","title":"17. 241220 Rotax Max E-RAVE Power Valve Adjustment Screw","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Power Valve Adjustment Screw\u003c\/strong\u003e (R.241220) is the OEM set screw used to fine-tune the travel and opening point of the exhaust power valve in the Rotax 125 MAX EVO E-RAVE system. Adjusting this screw alters the effective stroke of the valve piston, allowing authorised technicians to calibrate the power valve opening RPM within the parameters set by Rotax technical regulations. This is a sealed component at scrutineered events — do not adjust without reference to the Rotax service documentation.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Sits inside the valve cover (R.911559), retained by the compression spring (R.239952).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.241220\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the adjustment screw alongside the valve cover, compression spring, and full E-RAVE valve housing assembly parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141284061,"sku":"R.241220","price":15.67,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-retaining-plate","title":"18. 651935 Rotax Max E-RAVE Retaining Plate","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Retaining Plate\u003c\/strong\u003e (R.651935) is the OEM bracket that anchors the E-RAVE solenoid control unit mounting assembly to the engine on all Rotax 125 MAX EVO engines. This plate provides the structural foundation for the solenoid valve (R.664630), mounting plate (R.651925), and rubber buffers (R.660520\/R.660522) that make up the RAVE control unit bracket. A bent or cracked retaining plate misaligns the solenoid relative to the pressure line routing and can cause premature hose wear or solenoid connector stress.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.651935\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the retaining plate alongside the mounting plate, rubber buffers, and full E-RAVE solenoid bracket assembly.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141349597,"sku":"R.651935","price":30.42,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-rubber-buffer-660522","title":"22. 660522 Rotax Max E-RAVE Rubber Buffer 18x15 M6","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Rubber Buffer 18x15 M6\u003c\/strong\u003e (R.660522) is one of the OEM vibration-isolation rubber mounts used in the E-RAVE solenoid control unit bracket assembly on all Rotax 125 MAX EVO engines. Two of these rubber buffers are used at the retaining plate mounting points (Pos. 22), working alongside the single R.660520 buffer (Pos. 23) to isolate the solenoid valve from engine vibration. These rubber mounts protect the solenoid valve electronics from vibration-induced failure — a collapsed or hardened buffer transmits vibration directly into the solenoid body.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.660522\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 18 x 15mm, M6 thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity at this position:\u003c\/strong\u003e 2 (sold individually)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks both E-RAVE rubber buffer variants (R.660522 and R.660520) for a complete solenoid bracket rebuild.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141382365,"sku":"R.660522","price":17.34,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-rubber-buffer-660520","title":"23. 660520 Rotax Max E-RAVE Rubber Buffer 18x15 M6","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Rubber Buffer 18x15 M6\u003c\/strong\u003e (R.660520) is one of the OEM vibration-isolation rubber mounts used in the E-RAVE solenoid control unit bracket on all Rotax 125 MAX EVO engines. One of these buffers is used at the mounting plate position (Pos. 23), working alongside two R.660522 buffers (Pos. 22) to complete the solenoid vibration isolation system. Though dimensionally identical to R.660522, these are catalogued separately — order both R.660520 and R.660522 when replacing the complete solenoid bracket rubber mount set.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.660520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 18 x 15mm, M6 thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity at this position:\u003c\/strong\u003e 1 (sold individually)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks both E-RAVE rubber buffer variants (R.660520 and R.660522) for a complete solenoid bracket rebuild.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141415133,"sku":"R.660520","price":17.34,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-solenoid-mounting-plate","title":"24. 651925 Rotax Max E-RAVE Solenoid Mounting Plate","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Solenoid Mounting Plate\u003c\/strong\u003e (R.651925) is the OEM bracket that directly carries the E-RAVE solenoid valve (R.664630) and interfaces with the retaining plate (R.651935) and rubber buffers (R.660520, R.660522) to mount the solenoid to the engine. The mounting plate positions the solenoid at the correct angle relative to the pressure line (R.660574) and ensures the solenoid connector is accessible and properly supported. A bent or cracked mounting plate misaligns the solenoid and stresses the pressure line connections.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.651925\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the solenoid mounting plate alongside the retaining plate, rubber buffers, and solenoid valve for a complete E-RAVE bracket assembly.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141447901,"sku":"R.651925","price":19.51,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-solenoid-valve","title":"25. 664630 Rotax Max E-RAVE Solenoid Valve","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Solenoid Valve\u003c\/strong\u003e (R.664630) is the OEM electro-pneumatic valve that is the brain of the Rotax 125 MAX EVO power valve actuation system. Triggered by the ECU at a specific RPM point, the solenoid opens to route crankcase impulse pressure through the pressure line and hose package to the bellow, physically actuating the exhaust power valve to advance exhaust port timing. A failed solenoid causes the power valve to remain permanently closed, eliminating the top-end power step and making the engine feel flat in the upper RPM range.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Mounts to the solenoid mounting plate (R.651925) via two M5x16 Allen Bolts (R.840514). The solenoid receives its trigger signal from the wiring harness (R.666836) via the ECU (R.666815 Senior\/Micro or R.666813 Junior).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.664630\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBefore replacing the solenoid, test it with the Rotax wiring harness tester (R.276231) to confirm it is the fault source. CMC Karting stocks the solenoid alongside the full E-RAVE control unit assembly parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141513437,"sku":"R.664630","price":64.7,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-allen-screw-m5x16","title":"26. 840514 Rotax Max E-RAVE Allen Screw M5x16","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Allen Screw M5x16\u003c\/strong\u003e (R.840514) is the OEM ISO 4762 Grade 8.8 socket head cap screw used to secure the solenoid valve (R.664630) to the mounting plate (R.651925) in the Rotax 125 MAX EVO E-RAVE system. Two of these M5x16 bolts are required per solenoid mount, used with Washer 5.3 DIN 125 (R.927574) and Lock Nut M5 (R.842032). This fastener also appears in other locations across the Rotax engine assembly.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e in the E-RAVE application.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.840514\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e M5 x 16mm, ISO 4762, Grade 8.8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e 2 per solenoid mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks this fastener alongside the solenoid mounting hardware for a complete E-RAVE bracket assembly.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141546205,"sku":"R.840514","price":0.99,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-washer-5-3mm","title":"27. 927574 Rotax Max E-RAVE Washer 5.3mm DIN 125","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Washer 5.3mm DIN 125\u003c\/strong\u003e (R.927574) is the OEM flat washer used on the solenoid valve mounting bolts (R.840514) in the Rotax 125 MAX EVO E-RAVE system. Four of these washers are used per complete solenoid bracket assembly. This washer distributes clamping load across the rubber buffer faces and prevents the bolt heads from cutting into the buffer material under torque. It also appears at other hardware locations across the E-RAVE system and in the EVO Upgrade Kit E-RAVE (R.481260).\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.927574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 125, 5.3mm inner diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks this alongside the full E-RAVE solenoid bracket hardware set.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139141578973,"sku":"R.927574","price":0.32,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-lock-nut-m5","title":"28. 842032 Rotax Max E-RAVE Lock Nut M5","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Lock Nut M5\u003c\/strong\u003e (R.842032) is the OEM Grade 6.6 nylon-insert lock nut used on the M5x16 Allen bolts securing the solenoid valve to the mounting plate in the Rotax 125 MAX EVO E-RAVE system. Two of these M5 nylock nuts are required per solenoid mount, providing vibration-resistant retention that prevents the solenoid from working loose under engine vibration. This fastener also appears in the EVO Upgrade Kit E-RAVE (R.481260).\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.842032\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e M5, Grade 6.6, Nylon Insert Lock Nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e 2 per solenoid mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting carries the full Rotax E-RAVE solenoid fastener set — Allen screws, washers, and lock nuts in one order.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142103261,"sku":"R.842032","price":0.99,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-pressure-line-280mm","title":"29. 660574 Rotax Max E-RAVE Pressure Line 280mm","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Pressure Line 280mm\u003c\/strong\u003e (R.660574) is the OEM rigid pressure tube that connects the E-RAVE solenoid valve (R.664630) to the hose package RAVE control unit (R.651010) on all Rotax 125 MAX EVO engines. This 280mm tube carries the actuating air pressure from the solenoid to the bellow control unit, translating solenoid switching events into bellow actuation and ultimately power valve movement. A cracked, kinked, or disconnected pressure line causes immediate loss of E-RAVE function.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.660574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 280mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInspect the pressure line at every E-RAVE service — a hairline crack in this line is easily missed and causes intermittent power valve operation. CMC Karting stocks it alongside the full E-RAVE pneumatic circuit parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142136029,"sku":"R.660574","price":5.81,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-hose-package-control-unit","title":"37. 651010 Rotax Max E-RAVE Hose Package RAVE Control Unit","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Hose Package RAVE Control Unit\u003c\/strong\u003e (R.651010) is the OEM hose and fitting assembly that forms the intermediate pneumatic circuit between the solenoid valve (R.664630) and the power valve bellow (R.260723) on all Rotax 125 MAX EVO engines. This package routes actuating air pressure from the pressure line (R.660574) through the correct hose paths to produce the precise bellow inflation timing needed for accurate power valve operation. It also incorporates the impulse nozzle (R.956305). Leaking, kinked, or deteriorated hoses in this package cause erratic or absent power valve actuation.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. The hose package is supplied as a complete assembly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.651010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Complete hose routing assembly for RAVE control unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen diagnosing E-RAVE faults, inspect the hose package alongside the solenoid and pressure line. CMC Karting stocks the complete Rotax E-RAVE pneumatic circuit parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142201565,"sku":"R.651010","price":71.51,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-impulse-nozzle","title":"38. 956305 Rotax Max E-RAVE Impulse Nozzle","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Impulse Nozzle\u003c\/strong\u003e (R.956305) is the OEM metering orifice in the RAVE hose package that controls the rate of pressure delivery from the crankcase impulse circuit to the E-RAVE solenoid system on all Rotax 125 MAX EVO engines. This nozzle calibrates the impulse signal that triggers solenoid switching, ensuring the power valve opens at the correct crankcase pressure corresponding to the target RPM point. A blocked or incorrectly-sized nozzle alters the RPM at which the power valve actuates, shifting the power step and making the engine feel inconsistent across the RPM range.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e. Part of the Hose Package RAVE Control Unit (R.651010).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.956305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the impulse nozzle alongside the complete Rotax E-RAVE hose package and pneumatic circuit parts.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142234333,"sku":"R.956305","price":10.49,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-125-max-evo-upgrade-kit-erave","title":"281377 Rotax 125 MAX EVO Upgrade Kit – Junior to Senior E-RAVE","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Upgrade Kit E-RAVE\u003c\/strong\u003e (R.281377) is the complete OEM conversion kit for retrofitting a \u003cstrong\u003eRotax 125 Junior MAX EVO\u003c\/strong\u003e engine to full \u003cstrong\u003eRotax 125 Senior MAX EVO\u003c\/strong\u003e specification, including the E-RAVE electronic power valve system. This kit contains all the parts required to perform the conversion — E-RAVE exhaust valve assembly, solenoid, hose package, updated ECU box, and all associated hardware — allowing a Junior MAX engine to be legally and fully converted to Senior MAX EVO competition specification without purchasing a new engine.\u003c\/p\u003e\n\u003cp\u003eThis kit is for conversion from \u003cstrong\u003e125 Junior MAX EVO to 125 Senior MAX EVO (E-RAVE)\u003c\/strong\u003e only. It does not include the E-Box 125 MAX EVO — the electronic control unit must be ordered separately. Verify current Rotax technical regulations and confirm kit contents with your authorised Rotax distributor before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.281377\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConverts:\u003c\/strong\u003e Rotax 125 Junior MAX EVO → 125 Senior MAX EVO (E-RAVE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Does not include E-Box 125 MAX EVO (R.666815) — order separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the Rotax EVO Upgrade Kit for teams looking to step up from Junior to Senior class competition. Contact us to confirm current kit contents before ordering.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142267101,"sku":"R.281377","price":1034.13,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-125-micro-max-evo-downgrade-kit","title":"281557 Rotax 125 Micro MAX EVO Downgrade Kit – Junior to Micro","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 Micro MAX EVO Downgrade Kit\u003c\/strong\u003e (R.281557) is the complete OEM conversion kit for retrofitting a \u003cstrong\u003eRotax 125 Junior MAX EVO\u003c\/strong\u003e engine to \u003cstrong\u003eRotax 125 Micro MAX EVO\u003c\/strong\u003e specification. This kit contains all parts required to convert the engine's power output, ECU mapping, and configuration down to Micro MAX class specification — allowing teams to repurpose a Junior engine for use in the younger Micro class without purchasing a new engine.\u003c\/p\u003e\n\u003cp\u003eThis kit is for conversion from \u003cstrong\u003e125 Junior MAX EVO to 125 Micro MAX EVO\u003c\/strong\u003e only. Verify current Rotax technical regulations and confirm kit contents with your authorised Rotax distributor before ordering to ensure the conversion meets your series' technical requirements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.281557\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConverts:\u003c\/strong\u003e Rotax 125 Junior MAX EVO → 125 Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks both the upgrade and downgrade conversion kits. Contact us before ordering to confirm current kit contents and regulatory compliance for your series.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142299869,"sku":"R.281557","price":508.18,"currency_code":"USD","in_stock":true}]},{"product_id":"rotax-max-erave-upgrade-valve-housing-gasket","title":"250232 Rotax Max E-RAVE Upgrade Valve Housing Gasket","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max E-RAVE Upgrade Valve Housing Gasket\u003c\/strong\u003e (R.250232) is the OEM gasket specific to the EVO Upgrade Kit E-Exhaust Valve (R.481260) installation on the Rotax 125 MAX EVO. This gasket seals the exhaust valve housing during the E-RAVE system upgrade process and differs from the standard power valve gasket (R.250523) used in the base E-RAVE assembly. It is included in the full EVO Upgrade Kit but is also available separately for technicians performing the conversion who need replacement sealing components.\u003c\/p\u003e\n\u003cp\u003eFits the Rotax 125 \u003cstrong\u003eSenior MAX EVO and Junior MAX EVO\u003c\/strong\u003e in the context of the E-RAVE exhaust valve upgrade kit installation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.250232\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e EVO Upgrade Kit E-Exhaust Valve (R.481260) installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks this gasket alongside the EVO Upgrade Kit and full E-RAVE assembly parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139142332637,"sku":"R.250232","price":8.29,"currency_code":"USD","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/collections\/CMC_Rotax_Max_E-Rave_Power_Valve_System_Parts.png?v=1779735161","url":"https:\/\/cmckarting.com\/collections\/rotax-max-e-rave-power-valve-system-parts.oembed?page=2","provider":"CMC Karting","version":"1.0","type":"link"}