{"product_id":"piston-kit-81-19-pw50-40-50-wossner-8267d050-yamaha","title":"Piston Kit 81-19 PW50 40.50, Wossner 8267D050 Yamaha","description":"\u003cp\u003eThis Wossner forged piston kit is a +0.50mm oversize replacement for Yamaha PW50 models from 1981 to 1997. Engineered with precision and manufactured in Germany, it provides enhanced strength and consistent performance for two-stroke engine applications requiring a slightly larger bore size.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eForged piston construction for superior strength and durability\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eElliptical design ensures a consistent bearing surface during heat expansion\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePromotes efficient heat dissipation to cylinder walls\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePrevents localised stress and piston collapse\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eManufactured in Germany\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eBore Size: 40.50mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eActual Piston Size: 40.45mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eStroke: 39.20mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePiston Clearance: 0.05mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eWossner Compression Ratio: 2-stroke\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOEM Compression Ratio: 2-stroke\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCompression Height: 24.90mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eLock Part Number: CW10\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePin Part Number: WP105\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eRing Set Part Number: RSB4050\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003ePart No: 8267D050\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eYamaha PW50 (1981–1997)\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- venture-connect-compatibility:start --\u003e\n\u003csection class=\"venture-connect-compatibility\"\u003e\u003ch3\u003eVehicle Compatibility\u003c\/h3\u003e\n\u003cp\u003ePlease check the exact model and year before ordering.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003ePW 50\u003c\/td\u003e\n\u003ctd\u003e1981-2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003ePW 50\u003c\/td\u003e\n\u003ctd\u003e1981-2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003ePW 50\u003c\/td\u003e\n\u003ctd\u003e1985-2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003ePW 50\u003c\/td\u003e\n\u003ctd\u003e1981-2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\n\u003c!-- venture-connect-compatibility:end --\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":57506665660796,"sku":"56-W938+050_WO","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3952\/8167\/files\/stock57231_1.jpg?v=1790485285","url":"https:\/\/radhouse.co.uk\/products\/piston-kit-81-19-pw50-40-50-wossner-8267d050-yamaha","provider":"Radhouse","version":"1.0","type":"link"}