{"product_id":"cylinder-full-kit-5-60mm-big-bore-72-00mm-yamaha-yz-2t-250-1999-2025-cylinder-works-21009-k01","title":"CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm YAMAHA YZ 2T 250 1999 - 2025 CYLINDER WORKS 21009-K01","description":"\u003cp\u003eCylinder Works Big Bore Cylinder Kit is a complete top-end rebuild solution for Yamaha YZ 250 models, increasing displacement from 249cc to 295cc with a +5.6mm bore. This kit includes a high-quality nickel silicon carbide (NSC) electroplated cylinder for enhanced durability and reduced friction, along with a hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength. Designed as a true bolt-on upgrade, this kit provides a noticeable power increase throughout the entire RPM range without requiring further engine modifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eComplete top-end rebuild kit for big bore applications\u003c\/li\u003e\n\t\u003cli\u003eIncludes cylinder, cylinder head, power valve kit, piston kit, top-end gasket kit, and wrist pin bearing\u003c\/li\u003e\n\t\u003cli\u003eHand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength\u003c\/li\u003e\n\t\u003cli\u003eNickel silicon carbide (NSC) electroplated bore for tighter tolerances and lower friction\u003c\/li\u003e\n\t\u003cli\u003eProvides increased power across the entire RPM range\u003c\/li\u003e\n\t\u003cli\u003eOEM appearance at a lower cost\u003c\/li\u003e\n\t\u003cli\u003eTrue bolt-on installation with no additional modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eCylinder Diameter: 72 mm\u003c\/li\u003e\n\t\u003cli\u003eCylinder Kit Type: Big Bore\u003c\/li\u003e\n\t\u003cli\u003eDisplacement: 295 cc\u003c\/li\u003e\n\t\u003cli\u003eEngine Type: 2-Cycle\u003c\/li\u003e\n\t\u003cli\u003eCompression Ratio: Standard\u003c\/li\u003e\n\t\u003cli\u003eSize Over Standard: +5.60 mm\u003c\/li\u003e\n\t\u003cli\u003eUses Vertex Piston #24079B\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eYamaha YZ 250 2T (1999-2024)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cylinder Works","offers":[{"title":"Default Title","offer_id":51396979818762,"sku":"56-K156.72.CKCW","price":867.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/2757\/4026\/files\/56-K156_72_CKCW.jpg?v=1759602826","url":"https:\/\/2bros-mx.com\/products\/cylinder-full-kit-5-60mm-big-bore-72-00mm-yamaha-yz-2t-250-1999-2025-cylinder-works-21009-k01","provider":"2bros-mx.com","version":"1.0","type":"link"}