{"title":"Rotax Max Clutch Parts","description":"","products":[{"product_id":"rotax-125-max-starter-ring-gear-70t","title":"(1) 434840 Rotax 125 MAX EVO Starter Ring Gear 70T","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Starter Ring Gear 70T\u003c\/strong\u003e (R.434840) is the large OEM drive gear that mounts to the crankshaft and interfaces with the centrifugal clutch assembly on all Rotax 125 MAX EVO engines. Also known as the starter drive gear or starting ring gear, this 70-tooth gear transmits power from the clutch to the drivetrain and also accepts the teeth of the electric starter reduction gear during engine start. It is one of the highest-wear components in the Rotax clutch system and should be inspected regularly for chipped or worn teeth.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e. Secured to the crankshaft with the M20x1.5 Ring Gear Hex Nut (R.842319) and three M6x12 Allen Bolts (R.840036) to the clutch friction hub (R.659907).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInspect the starter ring gear teeth at every clutch service — a chipped gear can damage the electric starter. CMC Karting stocks the full range of Rotax 125 MAX EVO clutch assembly parts for fast, one-stop ordering.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938853667037,"sku":"R.434840","price":196.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_1_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-ring-gear-hex-nut-m20","title":"(2) 842319 Rotax 125 MAX EVO Ring Gear Hex Nut M20x1.5","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Ring Gear Hex Nut M20x1.5\u003c\/strong\u003e (R.842319) is the OEM lock nut that secures the Starter Ring Gear (R.434840) to the crankshaft on all Rotax 125 MAX EVO engines. This M20x1.5 fine-thread hex nut is tightened to 110 Nm (+\/- 5%) as specified in the Rotax service manual and must be replaced any time the clutch assembly is disassembled — it is a torque-critical fastener and should not be reused if worn or damaged.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways use a calibrated torque wrench when installing this nut — under-torque risks the gear working loose, over-torque can damage the crankshaft threads. CMC Karting carries this and all Rotax 125 MAX EVO clutch fasteners.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938853732573,"sku":"R.842319","price":23.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_2_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-clutch-friction-hub","title":"(3) 659907 Rotax 125 MAX EVO Clutch Friction Hub","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Clutch Friction Hub\u003c\/strong\u003e (R.659907) is the OEM centrifugal clutch assembly — the heart of the Rotax 125 MAX EVO drivetrain. This is the new-style friction hub clutch used on all current EVO-spec engines. The clutch mounts to the Starter Ring Gear (R.434840) via three M6x12 Allen Bolts (R.840036) and engages the Clutch Drum (R.659939) centrifugally as engine RPM increases, transmitting power through the drive sprocket and chain to the rear axle.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e. This is the new-style EVO clutch — if upgrading from an older non-EVO Rotax MAX engine, use the Clutch Retrofit Kit (R.281721).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Rotax clutch is a sealed, maintenance-free unit under normal operation — replace when engagement becomes erratic, the clutch slips at racing RPM, or after a hard crash. CMC Karting stocks the complete Rotax 125 MAX EVO clutch assembly line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938853830877,"sku":"R.659907","price":170.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_3_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-allen-screw-m6x12-clutch","title":"(4) 840036 Rotax 125 MAX EVO Allen Screw M6x12 – Clutch to Ring Gear","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Allen Screw M6x12\u003c\/strong\u003e (R.840036) is the OEM DIN 912 socket head cap screw used to secure the Clutch Friction Hub (R.659907) to the Starter Ring Gear (R.434840) on all Rotax 125 MAX EVO engines. Three of these M6x12 bolts are required per clutch assembly, tightened to 20 Nm as specified in the Rotax service manual. These are one of the most frequently replaced fasteners in the clutch system — inspect and replace if threads are damaged or bolt heads are rounded.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep a spare set of these on hand — they're cheap insurance at every clutch rebuild. CMC Karting carries all Rotax 125 MAX EVO clutch hardware and OEM fasteners.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938853929181,"sku":"R.840036","price":1.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_4_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-drive-sprocket-219","title":"(5) Rotax 125 MAX EVO Drive Sprocket 219 – 11 to 16 Tooth","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Drive Sprocket\u003c\/strong\u003e is the OEM engine sprocket that attaches to the clutch drum assembly and drives the 219 pitch kart chain. Available in \u003cstrong\u003e11 through 16 tooth\u003c\/strong\u003e configurations, these genuine Rotax sprockets are stamped with the ROTAX logo and designed for use with the Type 219 chain on all Rotax 125 MAX EVO engines. Sprocket tooth count selection directly affects your final drive ratio — lower tooth counts give more acceleration, higher counts increase top speed.\u003c\/p\u003e\n\u003cp\u003eThe 11-tooth sprocket (R.236877) uses a plain bearing (R.233855) and a specific outer thrust washer (R.627345). All 12–16 tooth sprockets (R.636021–R.636025) use the needle cage bearing (R.632415) and the standard outer thrust washer (R.627340). Compatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSelect your tooth count from the dropdown above. CMC Karting stocks all six tooth configurations so you can dial in the right ratio for your track and class. Order the matching thrust washer and bearing at the same time for a complete sprocket swap.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"11 Tooth","offer_id":47938854027485,"sku":"R.236877","price":61.35,"currency_code":"USD","in_stock":true},{"title":"12 Tooth","offer_id":47938854060253,"sku":"R.636021","price":63.69,"currency_code":"USD","in_stock":true},{"title":"13 Tooth","offer_id":47938854093021,"sku":"R.636022","price":63.69,"currency_code":"USD","in_stock":true},{"title":"14 Tooth","offer_id":47938854125789,"sku":"R.636023","price":63.69,"currency_code":"USD","in_stock":true},{"title":"15 Tooth","offer_id":47938854158557,"sku":"R.636024","price":63.69,"currency_code":"USD","in_stock":true},{"title":"16 Tooth","offer_id":47938854191325,"sku":"R.636025","price":63.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_5_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-needle-pin-5x5-sprocket","title":"(6) 232365 Rotax 125 MAX EVO Needle Pin 5x5 – Drive Sprocket Locating Pin","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Needle Pin 5x5\u003c\/strong\u003e (R.232365) is the OEM locating pin that indexes the drive sprocket on the clutch drum shaft, preventing the sprocket from rotating independently of the drum. This small but critical part ensures positive sprocket engagement and must be present and properly seated for correct clutch operation. The needle pin is easily lost during sprocket changes — always inspect for it when servicing the clutch.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO drive sprockets (11T–16T) and all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO (all sprocket sizes)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt under $5, this is one of the cheapest parts in the clutch assembly and one of the easiest to lose. Keep a spare in your toolbox. CMC Karting stocks the full Rotax 125 MAX EVO clutch and drivetrain parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938854289629,"sku":"R.232365","price":4.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_6_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-clutch-drum","title":"(7) 659939 Rotax 125 MAX EVO Clutch Drum","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Clutch Drum\u003c\/strong\u003e (R.659939) is the OEM outer clutch drum that the clutch friction hub (R.659907) engages as engine RPM rises. The drive sprocket mounts directly to this drum via a needle cage bearing (or plain bearing for the 11T sprocket), and the drum transfers power through the chain to the rear axle. The Rotax clutch drum is marked \"ROTAX+\" and is a wear item that should be inspected for scoring, grooving, or heat discoloration at each clutch service.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e. Note: The old-style drum was listed as R.659937 — R.659939 is the current replacement part number.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA scored or glazed clutch drum causes inconsistent engagement and heat buildup. CMC Karting stocks this drum alongside the full Rotax clutch assembly — order the friction hub, drum, and bearings together for a complete clutch overhaul.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938854387933,"sku":"R.659939","price":106.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_7_Clutch_Group.png?v=1779729424"},{"product_id":"rotax-125-max-sprocket-hex-nut-m28","title":"(8) 242925 Rotax 125 MAX EVO Sprocket Hex Nut M28x1","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Sprocket Hex Nut M28x1\u003c\/strong\u003e (R.242925) is the OEM nut that secures the drive sprocket assembly to the clutch drum on all Rotax 125 MAX EVO engines. This M28x1 fine-pitch hex nut is tightened to 120 Nm as specified in the Rotax service manual and retains the outer thrust washer, needle cage bearing (or plain bearing), and drive sprocket in position. Use a proper clutch holding tool (R.277364) when torquing this nut to avoid damaging the clutch assembly.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInspect the sprocket nut at every sprocket change and replace if threads show any damage. CMC Karting carries this and all Rotax 125 MAX EVO clutch and drivetrain fasteners.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938854486237,"sku":"R.242925","price":13.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_8_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-plain-bearing-11t-sprocket","title":"(9) 233855 Rotax 125 MAX EVO Plain Bearing – 11T Sprocket Only","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Clutch Plain Bearing 15x17x17.6\u003c\/strong\u003e (R.233855) is the OEM plastic bushing used exclusively with the \u003cstrong\u003e11-tooth drive sprocket (R.236877)\u003c\/strong\u003e on Rotax 125 MAX EVO engines. This plain bearing fits between the sprocket bore and the clutch drum shaft, allowing the sprocket to rotate freely until clutch engagement. Note that this bearing is \u003cstrong\u003eonly for the 11-tooth sprocket\u003c\/strong\u003e — 12 through 16-tooth sprockets use the needle cage bearing (R.632415) instead.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e — only when running the 11-tooth drive sprocket.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're running 12T or higher, you need the needle cage bearing (R.632415) instead. CMC Karting stocks both bearing types and the full range of Rotax 125 MAX EVO clutch components.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938854551773,"sku":"R.233855","price":15.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_9_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-clutch-needle-cage-bearing","title":"(10) Rotax 125 MAX EVO Clutch Needle Cage Bearing – 12 to 16 Tooth Sprocket","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Clutch Needle Cage Bearing\u003c\/strong\u003e is the OEM needle roller bearing that fits between the 12–16 tooth drive sprocket and the clutch drum shaft on all Rotax 125 MAX EVO engines. Two versions are available: the \u003cstrong\u003eShort (K 15x19x17, R.632415)\u003c\/strong\u003e and the \u003cstrong\u003eWide (K 15x19x20, R.932027)\u003c\/strong\u003e — both fit the same sprocket position but differ in width. The wide version (R.932027) is the newer spec used in current EVO engines; the short version (R.632415) was used in earlier configurations. Check your current bearing width when ordering.\u003c\/p\u003e\n\u003cp\u003eBoth bearings are compatible with \u003cstrong\u003e12 through 16-tooth sprockets only\u003c\/strong\u003e (R.636021–R.636025). The 11-tooth sprocket uses a plain bearing (R.233855). Compatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With:\u003c\/strong\u003e 12–16 tooth drive sprockets only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplace the needle cage bearing any time the sprocket is removed — it is an inexpensive part and a worn bearing is a common cause of drivetrain noise. CMC Karting stocks both versions.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Short – K 15x19x17 (R.632415)","offer_id":47938854617309,"sku":"R.632415","price":19.86,"currency_code":"USD","in_stock":true},{"title":"Wide – K 15x19x20 (R.932027)","offer_id":47938854650077,"sku":"R.932027","price":45.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_10_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-clutch-drum-o-ring","title":"(11) 950815 Rotax 125 MAX EVO Clutch Drum O-Ring DIN 3771 12x2.5","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Clutch Drum O-Ring\u003c\/strong\u003e (R.950815) is the OEM DIN 3771 NBR 70 o-ring that seats in the clutch drum assembly on all Rotax 125 MAX EVO engines. This o-ring seals the bearing cavity inside the drum, helping to retain lubricant and exclude debris from the needle cage bearing. Replace at every clutch service — it is an inexpensive part and a deteriorated o-ring can lead to accelerated bearing wear.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis o-ring is one of the cheapest parts in the Rotax clutch assembly — always replace it when rebuilding the drum. CMC Karting stocks it alongside the full Rotax 125 MAX EVO clutch parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938854748381,"sku":"R.950815","price":3.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_11_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-inner-thrust-washer-15-25","title":"(12) 927057 Rotax 125 MAX EVO Inner Thrust Washer 15.2\/25\/1","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Inner Thrust Washer 15.2\/25\/1\u003c\/strong\u003e (R.927057) is the OEM inner thrust washer that sits between the needle cage bearing and the clutch drum on all Rotax 125 MAX EVO engines when running 12 through 16-tooth sprockets. This washer controls axial play of the sprocket on the drum shaft and must be correctly installed to prevent sprocket migration and uneven chain wear.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e. Used with 12–16T sprockets; see the outer thrust washers (R.627340 \/ R.627345) for the corresponding external washer.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO (12–16T sprocket configuration)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks this washer alongside the needle cage bearings, o-ring, and all other Rotax clutch drum hardware for a complete service kit.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47938854813917,"sku":"R.927057","price":7.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_12_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-outer-clutch-thrust-washer","title":"(13) Rotax 125 MAX EVO Outer Clutch Thrust Washer – 11T \u0026 12-16T","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Outer Clutch Thrust Washer\u003c\/strong\u003e is the OEM external thrust washer that seats between the sprocket bearing assembly and the sprocket nut (R.242925) on all Rotax 125 MAX EVO engines. Two sizes are available depending on your drive sprocket: \u003cstrong\u003e10\/19\/1.5mm (R.627345) for the 11-tooth sprocket only\u003c\/strong\u003e, and \u003cstrong\u003e10\/22\/1.5mm (R.627340) for 12 through 16-tooth sprockets\u003c\/strong\u003e. Using the wrong washer will result in incorrect sprocket end-play and potential drivetrain issues.\u003c\/p\u003e\n\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Numbers:\u003c\/strong\u003e R.627345 (10\/19\/1.5mm, 11T only) \/ R.627340 (10\/22\/1.5mm, 12–16T)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eSelect the correct washer for your sprocket size from the dropdown. CMC Karting stocks both variants alongside the full Rotax 125 MAX EVO clutch parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"10\/19\/1.5 – 11 Tooth Only (R.627345)","offer_id":47938854879453,"sku":"R.627345","price":5.22,"currency_code":"USD","in_stock":true},{"title":"10\/22\/1.5 – 12 to 16 Tooth (R.627340)","offer_id":47938854912221,"sku":"R.627340","price":5.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_13_Clutch_Group.png?v=1779728356"},{"product_id":"rotax-125-max-outer-clutch-nut-m10x1","title":"(14) 942951 Rotax 125 MAX EVO Outer Clutch Nut M10x1","description":"\u003cp\u003eThe \u003cstrong\u003eRotax 125 MAX EVO Outer Clutch Nut M10x1\u003c\/strong\u003e (R.942951) is the OEM ISO 8673 Grade 8 fine-pitch hex nut that secures the outer clutch drum assembly on all Rotax 125 MAX EVO engines. This M10x1 nut is tightened to 35 Nm as specified in the Rotax service manual and retains the clutch drum components in their correct axial position on the output shaft. It is a torque-critical fastener and should be inspected at every clutch service — replace if threads are damaged or if the nut shows any sign of loosening.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eSenior MAX EVO, Junior MAX EVO, Mini MAX EVO, and Micro MAX EVO\u003c\/strong\u003e. Works in conjunction with the Clutch Drum (R.659939), drive sprocket, and associated thrust washers and bearings to complete the clutch output assembly.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep a spare in your clutch kit — this nut is easy to misplace during a clutch rebuild. CMC Karting stocks it alongside the complete Rotax 125 MAX EVO clutch and drivetrain parts line.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":47961108611293,"sku":"R.942951","price":4.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMC_Rotax_14_Clutch_Group.png?v=1779728356"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/collections\/CMC_Rotax_Clutch_Diagram.png?v=1778604279","url":"https:\/\/cmckarting.com\/collections\/rotax-max-clutch.oembed","provider":"CMC Karting","version":"1.0","type":"link"}