{"product_id":"cylinder-works-high-compression-standard-bore-cylinder-kit-20001-k01hc-for-yamaha-yfz450","title":"Cylinder Works High-Compression Standard-Bore Cylinder Kit 20001-K01HC for Yamaha YFZ450","description":"\u003cp\u003eThe Cylinder Works High-Compression Standard-Bore Cylinder Kit, manufacturer part number 20001-K01HC and vendor part number 422-20001KHC, is a complete top-end upgrade for select Yamaha YFZ450 models. Designed with a standard-bore cylinder and a 13.0:1 compression ratio, this kit supports strong performance while maintaining a stock-style appearance. It is engineered for riders and technicians seeking a matched, reliable replacement solution without unnecessary machine work.\u003c\/p\u003e\u003cp\u003eThe kit includes the cylinder, Vertex piston kit, and required gaskets for installation. The nickel-silicon-carbide-plated cylinder is designed for extended service life, consistent performance, and improved durability. Cylinder Works matches the cylinder and Vertex piston to promote longevity, reduce engine noise, and provide dependable fitment. The top-end gasket kit is included but does not contain valve stem seals. Replacement pistons, gaskets, and ring sets are available separately when service is required.\u003c\/p\u003e\u003cp\u003eThis high-compression standard-bore kit fits 2004–2009 and 2012–2013 Yamaha YFZ450 models. It is intended as a direct replacement-style cylinder kit, and no machine work is needed for standard installation where applicable. Always verify engine configuration, compression requirements, and installation specifications before servicing.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete high-compression standard-bore cylinder kit\u003c\/li\u003e\n\u003cli\u003e13.0:1 compression ratio for enhanced engine performance\u003c\/li\u003e\n\u003cli\u003eIncludes cylinder, Vertex piston kit, and gaskets\u003c\/li\u003e\n\u003cli\u003eNickel-silicon-carbide-plated cylinder for extended durability\u003c\/li\u003e\n\u003cli\u003eMatched cylinder and piston help promote longevity, performance, and reduced engine noise\u003c\/li\u003e\n\u003cli\u003eStock-style cylinder appearance\u003c\/li\u003e\n\u003cli\u003eNo machine work needed for applicable standard installations\u003c\/li\u003e\n\u003cli\u003eTop-end gasket kit does not include valve stem seals\u003c\/li\u003e\n\u003cli\u003eReplacement pistons, gaskets, and ring sets are available\u003c\/li\u003e\n\u003cli\u003eFits 2004–2009 and 2012–2013 Yamaha YFZ450 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2004 Yamaha YFZ450\u003cbr\u003e\n2005 Yamaha YFZ450\u003cbr\u003e\n2006 Yamaha YFZ450\u003cbr\u003e\n2007 Yamaha YFZ450\u003cbr\u003e\n2008 Yamaha YFZ450\u003cbr\u003e\n2009 Yamaha YFZ450\u003cbr\u003e\n2012 Yamaha YFZ450\u003cbr\u003e\n2013 Yamaha YFZ450","brand":"CYLINDER WORKS","offers":[{"title":"Default Title","offer_id":67551711920363,"sku":"422-20001KHC","price":730.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/ba5e-5a58ed9db9240.jpg?v=1790722226","url":"https:\/\/ctracingservices.com\/products\/cylinder-works-high-compression-standard-bore-cylinder-kit-20001-k01hc-for-yamaha-yfz450","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}