{"product_id":"cylinder-kit-big-bore-3mm-478cc-for-yamaha-yfz450r","title":"Cylinder Kit (Big Bore +3mm 478cc) for Yamaha YFZ450R","description":"\u003cp\u003e+3mm making 478cc with 12.0:1 compression piston\u003c\/p\u003e\n\u003cp\u003eCylinder Works +3mm Big Bore Complete Cylinder Kit for the 2009-present Yamaha YFZ450R and 2010-2011 Yamaha YFZ450X increases displacement to 478cc. This direct bolt-on upgrade requires no re-plating and includes all necessary components for installation, featuring a matched Vertex piston for durability and performance.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt-on installation with no additional machining required\u003c\/li\u003e\n\u003cli\u003eNickel Silicon Carbide plated for extended lifespan\u003c\/li\u003e\n\u003cli\u003eHoned to exact size for easy piston installation\u003c\/li\u003e\n\u003cli\u003eBig bore cylinders do not require additional machine work (unless specified)\u003c\/li\u003e\n\u003cli\u003eIncludes all necessary components for installation\u003c\/li\u003e\n\u003cli\u003eIncluded Items-\u003c\/li\u003e\n\u003cli\u003eCylinder\u003c\/li\u003e\n\u003cli\u003ePiston assembly\u003c\/li\u003e\n\u003cli\u003eTop-end gasket set\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBore: +3mm\u003cbr\u003eDisplacement: 478cc\u003cbr\u003eUses Vertex Piston #23403\u003c\/p\u003e\n\u003cp\u003eCompatible with:\u003cbr\u003eYamaha YFZ450R 2009-present\u003cbr\u003e\u003c\/p\u003e","brand":"Cylinder Works","offers":[{"title":"Default Title","offer_id":53947237990741,"sku":"CW21003-K02","price":418.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0880\/0528\/0085\/files\/CW21003-K02.webp?v=1779098141","url":"https:\/\/tradeparts.aceatv.co.uk\/products\/cylinder-kit-big-bore-3mm-478cc-for-yamaha-yfz450r","provider":"Ace ATV Trade (Parts)","version":"1.0","type":"link"}