{"product_id":"piston-kit-01-04-yfm660-101-00-wossner-8507d100-yamaha-atv","title":"Piston Kit 01-04 YFM660 101.00, Wossner 8507D100 Yamaha ATV","description":"\u003cp\u003eThis Wossner Piston Kit features a 101mm bore (oversize +1.00) and is specifically designed for Yamaha XTZ660 and select ATV models. Engineered with a forged construction for maximum strength and longevity, this piston delivers precise thermal performance and uniform thrust load distribution. Its elliptical design and superior metallurgy make it ideal for high-performance and heavy-duty applications. Made in Germany.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eForged design ensures enhanced durability and strength\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOptimised heat transfer from the combustion chamber to cylinder walls\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eElliptical profile distributes load evenly and reduces risk of 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: 101.00 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMeasured Bore: 100.93 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eClearance: 0.07 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCompression Ratio: OEM\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOEM Compression Ratio: 9.20:1\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eDome Volume: -0.30 cm³\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCompression Height: 27.00 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eDisplay: 660 cm³\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eHub Stroke: 84.00 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePart No.: 56-W8507+100.WO\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePiston Kit Model: 8507D100 (+1.00)\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 XTZ660 Tenere 1991–1998\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYamaha XTZ660 Raptor 1991–1998\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYamaha YFM660R Raptor 2001–2009\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYamaha YFM660F Grizzly 2001–2009\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\u003eXTZ 600\u003c\/td\u003e\n\u003ctd\u003e1991-1998\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003eSZR 660\u003c\/td\u003e\n\u003ctd\u003e1995-1997\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003eXTZ 660\u003c\/td\u003e\n\u003ctd\u003e1991-1998\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":57506649833852,"sku":"56-W8507+100.WO","price":255.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3952\/8167\/files\/stock56994_1.jpg?v=1790484376","url":"https:\/\/radhouse.co.uk\/products\/piston-kit-01-04-yfm660-101-00-wossner-8507d100-yamaha-atv","provider":"Radhouse","version":"1.0","type":"link"}