{"product_id":"namura-060-over-bore-piston-kit-for-yamaha-660-raptor-grizzly-rhino-101-5mm","title":"Namura .060 Over Bore Piston Kit for Yamaha 660 Raptor, Grizzly \u0026 Rhino 101.5mm","description":"\u003ch2\u003eNamura .060 Over Bore Piston Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis Namura .060 over bore piston kit replaces the original piston in your Yamaha 660 Raptor, Grizzly, or Rhino, providing a 101.5mm bore size for increased displacement.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .060 Over Bore Piston Kit is designed for Yamaha 660cc engines, offering a direct fit for Raptor, Grizzly, and Rhino models. It includes a cast piston and rings to restore or enhance engine performance. This kit is a popular choice for rebuilding high-mileage engines or adding a mild overbore.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCast aluminum piston with precise .060 over bore sizing\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings and wrist pin for complete installation\u003c\/li\u003e\n\u003cli\u003e101.5mm bore diameter matches factory overbore specifications\u003c\/li\u003e\n\u003cli\u003eDurable construction withstands high-temperature operation\u003c\/li\u003e\n\u003cli\u003eLightweight design reduces reciprocating mass for quicker revs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Raptor 660\u003c\/li\u003e\n\u003cli\u003efor Yamaha Grizzly 660\u003c\/li\u003e\n\u003cli\u003efor Yamaha Rhino 660\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding ATV and UTV engines after wear or failure\u003c\/li\u003e\n\u003cli\u003eUpgrading engine displacement for more power in off-road applications\u003c\/li\u003e\n\u003cli\u003eReplacing worn pistons in high-hour recreational vehicles\u003c\/li\u003e\n\u003cli\u003ePerformance restoration for Yamaha 660 series machines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.060 over (101.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCast aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Components\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, rings, wrist pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.060 Over Piston Kit for 660cc\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 I need to re-plate the cylinder after installing this overbore piston? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, a .060 over bore requires the cylinder to be bored and honed to match the new piston. Professional machining is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this piston compatible with stock cylinder heads? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the Namura piston is designed to work with the stock cylinder head and valve clearances for the Yamaha 660 engine.\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":44949750349910,"sku":"SZ1F14032","price":193.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_db2a7bf2-70d3-4edf-b287-61e213eaf331.jpg?v=1781397959","url":"https:\/\/www.solidspare.com\/products\/namura-060-over-bore-piston-kit-for-yamaha-660-raptor-grizzly-rhino-101-5mm","provider":"Solid Spare","version":"1.0","type":"link"}