{"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","url":"https:\/\/cmckarting.com\/products\/rotax-125-max-clutch-drum","provider":"CMC Karting","version":"1.0","type":"link"}