{"product_id":"rk-4107-040ex-chain-and-sprocket-kit-oem-replacement-for-yamaha-yzf-r1-2004-2005","title":"RK 4107-040EX Chain and Sprocket Kit, OEM Replacement for Yamaha YZF-R1 2004-2005","description":"Chain and Sprocket Kit - OEM Replacement - Natural - Yamaha YZF-R1 '04-'05\n\u003cp\u003eThe RK 4107-040EX Chain and Sprocket Kit is an OEM replacement drivetrain solution designed for the Yamaha YZF-R1 model years 2004-2005. This motorcycle chain and sprocket set combines OE gearing with durable Driven® sprockets to provide dependable fitment, smooth power transfer, and long-mileage performance for street and sport riding applications.\u003c\/p\u003e\u003cp\u003eThe kit includes a premium Driven® C45 steel alloy rear sprocket with a black case-hardened finish, paired with a Driven® C45 steel front sprocket that is case hardened and quenched for enhanced durability. The sprocket construction is engineered to withstand the demanding loads produced by the Yamaha YZF-R1 engine while supporting consistent chain engagement and reliable drivetrain operation.\u003c\/p\u003e\u003cp\u003eAs an RK OEM Replacement kit, the 4107-040EX is designed to match original-equipment gearing for straightforward replacement and predictable riding characteristics. It is a practical choice for maintaining the factory performance of a Yamaha YZF-R1 from 2004 or 2005 when the original chain and sprockets show wear. Confirm the motorcycle model and year before installation to ensure proper fitment.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFitment: Designed for Yamaha YZF-R1 motorcycles from 2004-2005\u003c\/li\u003e\n\u003cli\u003eKit Type: OEM replacement chain and sprocket kit with OE gearing\u003c\/li\u003e\n\u003cli\u003eRear Sprocket: Driven C45 steel alloy construction with a black case-hardened finish\u003c\/li\u003e\n\u003cli\u003eFront Sprocket: Driven C45 steel construction, case hardened and quenched for durability\u003c\/li\u003e\n\u003cli\u003ePerformance: Built for high-mileage service and dependable power transfer\u003c\/li\u003e\n\u003cli\u003eBrand: RK\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 4107-040EX\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 4107-040EX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RK","offers":[{"title":"Default Title","offer_id":67549377528043,"sku":"12301629","price":318.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/4917472.png?v=1790687924","url":"https:\/\/ctracingservices.com\/products\/rk-4107-040ex-chain-and-sprocket-kit-oem-replacement-for-yamaha-yzf-r1-2004-2005","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}