{"product_id":"cylinder-works-20003-k02hc-high-compression-standard-bore-cylinder-kit-for-yamaha-yfz450r-yfz450x","title":"Cylinder Works 20003-K02HC High-Compression Standard Bore Cylinder Kit for Yamaha YFZ450R\/YFZ450X","description":"\u003cp\u003eThe Cylinder Works 20003-K02HC high-compression standard bore cylinder kit is designed to restore and enhance top-end performance on select Yamaha sport ATVs. This complete kit includes a standard bore cylinder, Vertex high-compression piston kit, and the necessary top-end gaskets for a streamlined installation. With a 13.0:1 compression ratio, it is engineered to support strong performance while maintaining dependable operation for recreational, racing, and performance-focused applications.\u003c\/p\u003e\u003cp\u003eThe cylinder features a stock-style appearance and nickel silicon carbide plating for improved wear resistance, heat management, and extended service life. The cylinder, piston, and components are matched to promote longevity, consistent performance, and reduced engine noise. No machining is required for installation when used with the applicable engine and supporting components, helping simplify the rebuild process. The top-end gasket kit does not include valve stem seals, so those should be inspected and replaced separately as needed.\u003c\/p\u003e\u003cp\u003eThis Cylinder Works kit fits 2009–2017 Yamaha YFZ450R models and the 2010 Yamaha YFZ450X. It is intended as a high-compression standard bore replacement and performance upgrade for compatible engines. Replacement pistons, gaskets, and ring sets are available separately to support future maintenance. Verify model year, engine configuration, compression requirements, and clearance specifications before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete high-compression standard bore kit\u003c\/li\u003e\n\u003cli\u003eIncludes cylinder, Vertex piston kit, and top-end gaskets\u003c\/li\u003e\n\u003cli\u003e13.0:1 compression ratio for enhanced engine performance\u003c\/li\u003e\n\u003cli\u003eStandard bore configuration for compatible Yamaha YFZ450R and YFZ450X engines\u003c\/li\u003e\n\u003cli\u003eNickel silicon carbide plated cylinder for extended durability and wear resistance\u003c\/li\u003e\n\u003cli\u003eStock-style cylinder appearance\u003c\/li\u003e\n\u003cli\u003eMatched Vertex piston components help promote longevity, performance, and reduced engine noise\u003c\/li\u003e\n\u003cli\u003eNo machining required for applicable installations\u003c\/li\u003e\n\u003cli\u003eTop-end gasket kit does not include valve stem seals\u003c\/li\u003e\n\u003cli\u003eFits 2009–2017 Yamaha YFZ450R and 2010 Yamaha YFZ450X\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2009 Yamaha YFZ450R\u003cbr\u003e\n2009 Yamaha YFZ450R SE\u003cbr\u003e\n2010 Yamaha YFZ450R\u003cbr\u003e\n2010 Yamaha YFZ450R SE\u003cbr\u003e\n2010 Yamaha YFZ450X\u003cbr\u003e\n2011 Yamaha YFZ450R\u003cbr\u003e\n2011 Yamaha YFZ450R SE\u003cbr\u003e\n2011 Yamaha YFZ450X\u003cbr\u003e\n2012 Yamaha YFZ450R\u003cbr\u003e\n2012 Yamaha YFZ450R SE\u003cbr\u003e\n2013 Yamaha YFZ450R\u003cbr\u003e\n2013 Yamaha YFZ450R SE\u003cbr\u003e\n2014 Yamaha YFZ450R\u003cbr\u003e\n2014 Yamaha YFZ450R SE\u003cbr\u003e\n2015 Yamaha YFZ450R\u003cbr\u003e\n2015 Yamaha YFZ450R SE\u003cbr\u003e\n2016 Yamaha YFZ450R\u003cbr\u003e\n2016 Yamaha YFZ450R SE\u003cbr\u003e\n2017 Yamaha YFZ450R\u003cbr\u003e\n2017 Yamaha YFZ450R SE\u003cbr\u003e\n2018 Yamaha YFZ450R\u003cbr\u003e\n2018 Yamaha YFZ450R SE\u003cbr\u003e\n2019 Yamaha YFZ450R\u003cbr\u003e\n2019 Yamaha YFZ450R SE\u003cbr\u003e\n2020 Yamaha YFZ450R\u003cbr\u003e\n2020 Yamaha YFZ450R SE\u003cbr\u003e\n2021 Yamaha YFZ450R\u003cbr\u003e\n2022 Yamaha YFZ450R\u003cbr\u003e\n2022 Yamaha YFZ450R SE\u003cbr\u003e\n2023 Yamaha YFZ450R\u003cbr\u003e\n2023 Yamaha YFZ450R SE\u003cbr\u003e\n2024 Yamaha YFZ450R\u003cbr\u003e\n2025 Yamaha YFZ450R","brand":"CYLINDER WORKS","offers":[{"title":"Default Title","offer_id":67551706644715,"sku":"422-20003K2H","price":586.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/3301-5a58f13848546.jpg?v=1790721844","url":"https:\/\/ctracingservices.com\/products\/cylinder-works-20003-k02hc-high-compression-standard-bore-cylinder-kit-for-yamaha-yfz450r-yfz450x","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}