{"product_id":"ref-56-w4737-hc-wo","title":"PISTON KIT 01-09 YFM660 100 HC FORGED WOSSNER 8577DA","description":"\u003cbody\u003e\n\n\n\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eWossner forged piston kit designed for Yamaha YFM660R Raptor and YFM660F Grizzly models, featuring a 100mm bore and 99.93mm size for high compression performance. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse, making it ideal for high-performance applications.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eHigh-strength forged piston for durability\u003c\/li\u003e \t\u003cli\u003eOptimized heat transfer for improved combustion efficiency\u003c\/li\u003e \t\u003cli\u003eElliptical design to ensure uniform expansion and reduced localized pressure\u003c\/li\u003e \t\u003cli\u003eHigh compression ratio for enhanced engine performance\u003c\/li\u003e \t\u003cli\u003eManufactured in Germany\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eBore: 100mm\u003c\/li\u003e \t\u003cli\u003eSize: 99.93mm\u003c\/li\u003e \t\u003cli\u003ePart Number: 8577DA\u003c\/li\u003e \t\u003cli\u003eCompression Ratio: OEM\u003c\/li\u003e \t\u003cli\u003eOEM Compression Ratio: 19.20:1\u003c\/li\u003e \t\u003cli\u003eLock Part Number: CW22\u003c\/li\u003e \t\u003cli\u003eRing Set Part Number: 1000XSY\u003c\/li\u003e \t\u003cli\u003eRod Part Numbers: P4037 (2001) P4038 (2002-2005)\u003c\/li\u003e \t\u003cli\u003eDisplacement: 660 cm³\u003c\/li\u003e \t\u003cli\u003eStroke: 84.00mm\u003c\/li\u003e \t\u003cli\u003eClearance: 0.07mm\u003c\/li\u003e \t\u003cli\u003eDome Volume: +18.20 cm³\u003c\/li\u003e \t\u003cli\u003eCompression Height: 27.00mm\u003c\/li\u003e \t\u003cli\u003eTheoretical Weight: Not specified\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003e3YF-11631-00-X0\u003c\/li\u003e \t\u003cli\u003e44737M10000\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eYamaha YFM660R Raptor (2001-2009)\u003c\/li\u003e \t\u003cli\u003eYamaha YFM660F Grizzly (2001-2009)\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003eMajority of our listings are for a direct replacement for your original part.\u003c\/p\u003e\n\u003cp\u003eOur parts are made of quality and are designed to meet or exceed the original OEM Standards.\u003c\/p\u003e\n\u003cp\u003eOur products are often a cost effective alternative to genuine OEM Parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: \u003c\/strong\u003ethe models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003c\/body\u003e","brand":"AW Motorcycle Parts","offers":[{"title":"Default Title","offer_id":55594817519990,"sku":"REF 56-W4737.HC.WO","price":228.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/7032\/3318\/files\/stock54956_1.jpg?v=1746721149","url":"https:\/\/n0jgtc-nz.myshopify.com\/products\/ref-56-w4737-hc-wo","provider":"AW Motorcycle Parts","version":"1.0","type":"link"}