{"product_id":"rk-oem-replacement-chain-and-sprocket-kit-4037-150ex-for-yamaha-yzf-r3-2015-2025","title":"RK OEM Replacement Chain and Sprocket Kit 4037-150EX for Yamaha YZF-R3 2015–2025","description":"Chain and Sprocket Kit - OEM Replacement - Natural - Yamaha YZF-R3 '15-'25\n\u003cp\u003eThe RK 4037-150EX Chain and Sprocket Kit is an OEM replacement drivetrain solution designed for the Yamaha YZF-R3 from 2015 through 2025. This high-mileage performance kit includes OE gearing to help preserve the motorcycle’s original power delivery, acceleration characteristics, and overall riding feel.\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 improved durability. These materials and treatments help the sprockets withstand everyday street use, repeated load cycles, and normal drivetrain wear. The natural-finish RK replacement kit is suited for riders seeking dependable service and straightforward compatibility with the factory Yamaha YZF-R3 drivetrain.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha YZF-R3 model years 2015–2025. Verify the motorcycle model year and original gearing before installation. The brand is RK, and the manufacturer and vendor part number is 4037-150EX.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOE Gearing: Maintains the factory-style gearing configuration for Yamaha YZF-R3 applications\u003c\/li\u003e\n\u003cli\u003eHigh-Mileage Performance: Designed as a durable replacement kit for extended service life\u003c\/li\u003e\n\u003cli\u003eRear Sprocket: Premium Driven® C45 steel alloy construction with a black case-hardened finish\u003c\/li\u003e\n\u003cli\u003eFront Sprocket: Driven® C45 steel construction with case hardening and quenching for added durability\u003c\/li\u003e\n\u003cli\u003eApplication: Fits Yamaha YZF-R3 motorcycles from 2015 through 2025\u003c\/li\u003e\n\u003cli\u003eBrand and Part Number: RK 4037-150EX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RK","offers":[{"title":"Default Title","offer_id":67549394370795,"sku":"12301617","price":221.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/4917454.png?v=1790688131","url":"https:\/\/ctracingservices.com\/products\/rk-oem-replacement-chain-and-sprocket-kit-4037-150ex-for-yamaha-yzf-r3-2015-2025","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}