{"product_id":"piston-kit-87-09-yfz350-68-50-wossner-8075d450-yamaha-atv","title":"PISTON KIT 87-09 YFZ350 68.50, WOSSNER 8075D450 YAMAHA ATV","description":"\u003cp\u003eThis Wossner forged piston kit has a 68.50mm bore and is a +4.50 oversize component designed for select Yamaha two-stroke engines. Manufactured in Germany, the piston features an elliptical design that distributes thrust loads evenly and reduces the risk of localised pressure points and piston collapse. Its construction supports effective heat transfer from the combustion chamber to the cylinder wall, enhancing reliability under high-performance conditions.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eForged piston construction for increased structural integrity\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eElliptical design for uniform bearing surface under heat expansion\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eEfficient combustion chamber heat transfer to cylinder walls\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eMade in Germany\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eIncludes piston, pin, locks, and ring set\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eBore Size: 68.50mm\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eActual Bore: 68.44mm\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eStroke: 54.00mm\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eClearance: 0.06mm\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eCompression Ratio (Wossner and OEM): 2-stroke\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eCompression Height: 36.00mm\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eDisplacement: 347 cm³\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003ePiston Kit Part No: 56-W513+450.WO\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eLock P\/N: CW16\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003ePin P\/N: WP027\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eRing Set P\/N: RSB6850 (x2)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha YFZ 350 Banshee (1987–2007)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha RD350 LC - YPVS (1980–1987)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha RD350 AC (1950–2014)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha RZ350 (1982–1990)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha RD 350 (1973–1976)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha RD 400 (1976)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57161932276085,"sku":"56-W513+450.WO","price":139.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/stock55585_1.jpg?v=1778546108","url":"https:\/\/www.smxoffroad.com\/products\/piston-kit-87-09-yfz350-68-50-wossner-8075d450-yamaha-atv","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}