{"product_id":"namura-020-over-bore-piston-rings-for-yamaha-660-raptor-grizzly-rhino-100-5mm","title":"Namura .020 Over Bore Piston Rings for Yamaha 660 Raptor Grizzly \u0026 Rhino 100.5mm","description":"\u003ch2\u003ePiston Rings for Yamaha\u003c\/h2\u003e\u003cp\u003eThese .020 over bore piston rings, sized at 100.5mm, are designed for Yamaha 660 Raptor, Grizzly, and Rhino engines, providing a precise seal for rebuilt cylinders.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eNamara brand piston rings for Yamaha 660 Raptor, Grizzly, and Rhino models offer a .020 oversize (100.5mm) fit for bored cylinders, restoring compression and oil control during engine rebuilds. Each set includes top and second rings for reliable sealing in high-performance Yamaha engines.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDuctile iron construction for low friction and long wear\u003c\/li\u003e\n\u003cli\u003eChrome-plated top ring resists scuffing under load\u003c\/li\u003e\n\u003cli\u003eTaper-faced second ring for rapid oil scraping\u003c\/li\u003e\n\u003cli\u003ePrecisely gapped for consistent ring pressure\u003c\/li\u003e\n\u003cli\u003eCompatible with standard ring grooves\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Raptor 660 (2001-2005)\u003c\/li\u003e\n\u003cli\u003efor Yamaha Grizzly 660 (2001-2008)\u003c\/li\u003e\n\u003cli\u003efor Yamaha Rhino 660 (2003-2009)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds after cylinder boring\u003c\/li\u003e\n\u003cli\u003eRestoring compression in high-mileage Yamaha ATVs\u003c\/li\u003e\n\u003cli\u003ePerformance upgrades paired with aftermarket pistons\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100.5mm (.020 oversize)\u003c\/td\u003e\u0026lt;\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRing Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop and second rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDuctile iron with chrome plating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha 660 engines (Raptor, Grizzly, Rhino)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do these rings require a specific ring gap? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, measure and adjust ring end gap according to your cylinder bore dimensions for proper sealing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can these rings be used with a standard bore piston? \u003cstrong\u003eA:\u003c\/strong\u003e These are .020 oversize rings and require a cylinder bored to 100.5mm; they are not for stock bore pistons.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44847208333398,"sku":"SZ1F05656","price":50.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_9b4df098-b346-41c1-b7a9-c88b2f42054d.jpg?v=1781059723","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-piston-rings-for-yamaha-660-raptor-grizzly-rhino-100-5mm","provider":"Solid Spare","version":"1.0","type":"link"}