{"product_id":"yamaha-genuine-rd250lc-rd350lc-tachometer-primary-gear-2r9-17851-00","title":"Yamaha Genuine RD250LC \/ RD350LC Tachometer Primary Gear 2R9-17851-00","description":"\u003cp\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0899\/5009\/3636\/files\/download.png?v=1736759431\" alt=\"Yamaha Genuine OEM\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eProduct Description\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eFactory-original steel tachometer primary drive gear (Gear, Primary). Installs inside the clutch\/right-hand crankcase cover to mesh with the drive axle gear, transferring mechanical rotational speed from the primary drive assembly to the analog tachometer cable on classic 2-stroke twin-cylinder Yamaha motorcycles.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eVehicle Compatibility\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eStandard factory replacement fitment across classic air-cooled and liquid-cooled 2-stroke 250cc–400cc parallel-twin Yamaha platforms:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMake\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis \/ Engine Variant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRD250LC \/ RZ250\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4L1 \/ 29L (250cc 2T LC Twin)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1980–1985\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRight Crankcase Tachometer Primary Drive Gear\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRD350LC \/ RZ350 \/ RZ350R\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4L0 \/ 31K \/ 29L \/ 1WT (350cc 2T LC Twin)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1980–1986\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRight Crankcase Tachometer Primary Drive Gear\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRD400 \/ RD400F Daytona Special\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2R9 \/ 1A3 \/ 2V0 (400cc 2T AC Twin)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1979–1980\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRight Crankcase Tachometer Primary Drive Gear\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFitment Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eMounts directly on the internal tachometer drive axle (\u003ccode\u003e2R8-17861-00\u003c\/code\u003e) inside the right engine clutch casing. Ensure dowel pins (\u003ccode\u003e93603-22028\u003c\/code\u003e) and thrust plate washers (\u003ccode\u003e90201-10135\u003c\/code\u003e) are correctly shimmed during installation to prevent excessive end-play or gear tooth binding under load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePlease ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!\u003c\/p\u003e\n\u003cp\u003eAt\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDmmotorcycles\u003c\/strong\u003e, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003egenuine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand high-quality\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eaftermarket\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eparts and continually update our inventory to meet growing demand.\u003c\/p\u003e\n\u003cp\u003eLooking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.\u003c\/p\u003e\n\u003cp\u003eWe’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.\u003c\/p\u003e\n\u003cp\u003ePlease note:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll parts are shipped from Cyprus (Europe).\u003c\/li\u003e\n\u003cli\u003eCustomers outside the EU may incur additional import taxes based on the value of the item.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: large; font-family: Arial;\"\u003e\u003cimg alt=\"\"\u003e\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":57201285071172,"sku":null,"price":34.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0899\/5009\/3636\/files\/IMG_20260904_114222.jpg?v=1788760768","url":"https:\/\/www.dm-motorcycles.com\/products\/yamaha-genuine-rd250lc-rd350lc-tachometer-primary-gear-2r9-17851-00","provider":"www.dm-motorcycles.com","version":"1.0","type":"link"}