{"product_id":"cylinder-works-20003-k01-standard-bore-12-5-1-high-compression-cylinder-kit-for-yamaha-yz450f-and-wr450f","title":"Cylinder Works 20003-K01 Standard Bore 12.5:1 High-Compression Cylinder Kit for Yamaha YZ450F and WR450F","description":"\u003cp\u003eThe Cylinder Works 20003-K01 Cylinder Kit is a complete standard-bore, high-compression top-end solution for select Yamaha YZ450F and WR450F motorcycles. Designed with a 95 mm bore and a 12.5:1 compression ratio, this kit helps restore engine performance while providing a reliable replacement for worn or damaged original equipment components. The kit includes the cylinder, matched piston kit, and required gaskets for a streamlined installation.\u003c\/p\u003e\u003cp\u003eMatched with a Vertex piston, the Cylinder Works kit is engineered to support long service life, consistent performance, and reduced engine noise. The cylinder maintains a stock-like appearance while featuring a nickel silicon carbide plated bore for improved durability and wear resistance. No machine work is needed for installation when used with the specified standard-bore application, helping simplify top-end service.\u003c\/p\u003e\u003cp\u003eFitment includes 2006-2009 Yamaha YZ450F models and select 2007-2009 and 2011-2013 Yamaha WR450F models. The top-end gasket kit does not include valve stem seals. Replacement pistons, gaskets, and ring sets are available separately for future maintenance. Verify model year and engine compatibility before ordering. This product is manufactured by Cylinder Works and supplied under vendor part number 20003-K01.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete standard-bore high-compression kit\u003c\/li\u003e\n\u003cli\u003e95 mm bore with a 12.5:1 compression ratio\u003c\/li\u003e\n\u003cli\u003eIncludes cylinder, matched Vertex piston kit, and gaskets\u003c\/li\u003e\n\u003cli\u003eNickel silicon carbide plated cylinder bore for extended service life\u003c\/li\u003e\n\u003cli\u003eStock-like cylinder appearance\u003c\/li\u003e\n\u003cli\u003eNo machine work required for specified applications\u003c\/li\u003e\n\u003cli\u003eEngineered for longevity, performance, and reduced engine noise\u003c\/li\u003e\n\u003cli\u003eReplacement pistons, gaskets, and ring sets available\u003c\/li\u003e\n\u003cli\u003eFits 2006-2009 Yamaha YZ450F models\u003c\/li\u003e\n\u003cli\u003eFits 2007-2009 and 2011-2013 Yamaha WR450F models\u003c\/li\u003e\n\u003cli\u003eTop-end gasket kit does not include valve stem seals\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2006 Yamaha YZ450F\u003cbr\u003e\n2007 Yamaha WR450F\u003cbr\u003e\n2007 Yamaha YZ450F\u003cbr\u003e\n2008 Yamaha WR450F\u003cbr\u003e\n2008 Yamaha YZ450F\u003cbr\u003e\n2009 Yamaha WR450F\u003cbr\u003e\n2009 Yamaha YZ450F\u003cbr\u003e\n2010 Yamaha WR450F\u003cbr\u003e\n2011 Yamaha WR450F\u003cbr\u003e\n2012 Yamaha WR450F\u003cbr\u003e\n2013 Yamaha WR450F\u003cbr\u003e\n2014 Yamaha WR450F\u003cbr\u003e\n2015 Yamaha WR450F","brand":"CYLINDER WORKS","offers":[{"title":"Default Title","offer_id":67551707332843,"sku":"422-20003K","price":695.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/2ea4-5a58f0e60ab53.jpg?v=1790721894","url":"https:\/\/ctracingservices.com\/products\/cylinder-works-20003-k01-standard-bore-12-5-1-high-compression-cylinder-kit-for-yamaha-yz450f-and-wr450f","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}