{"product_id":"4894m07900-wiseco-std-piston-kit-for-yamaha-nytro-2006-79-00mm-9-5-1-cr","title":"4894M07900 Wiseco Std Piston Kit for Yamaha Nytro 2006 79.00mm 9.5:1 CR","description":"\u003ch2\u003eWiseco Std Piston Kit for Yamaha Nytro\u003c\/h2\u003e\u003cp\u003eThis Wiseco standard piston kit is a forged replacement piston for the Yamaha Nytro 1049cc engine, cross-referencing part number 4894M07900 with a 79.00mm bore and 9.5:1 compression ratio.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco piston kit for Yamaha Nytro provides a stock-bore forged replacement for the 1049cc triple. The 79.00mm piston keeps the factory bore size while running a 9.5:1 compression ratio, so no overbore machining is needed. It fits riders and builders doing a straight top-end refresh on a worn or damaged Nytro engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged aluminum construction for strength and heat resistance\u003c\/li\u003e\n\u003cli\u003e79.00mm bore size matches the stock Yamaha Nytro cylinder\u003c\/li\u003e\n\u003cli\u003e9.5:1 compression ratio for factory-style combustion pressure\u003c\/li\u003e\n\u003cli\u003eCross-references Wiseco part 4894M07900 for identification\u003c\/li\u003e\n\u003cli\u003eStandard-bore design, no overbore machining required\u003c\/li\u003e\n\u003cli\u003eBuilt for the 1049cc Yamaha Nytro engine platform\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha Nytro 2006 with 1049cc engine\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStock-bore top-end rebuilds on Yamaha Nytro snowmobiles\u003c\/li\u003e\n\u003cli\u003eReplacing a worn or damaged piston without boring the cylinder\u003c\/li\u003e\n\u003cli\u003eRefresh builds that keep the factory 79.00mm bore size\u003c\/li\u003e\n\u003cli\u003eTrail and mountain riding where stock compression is preferred\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4894M07900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e79.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompression Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9.5:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1049cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged\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 Does this piston require cylinder machining? \u003cstrong\u003eA:\u003c\/strong\u003e No, the 79.00mm size is standard bore, so it is made to fit the stock Yamaha Nytro cylinder. The bore should still be measured and honed before assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What compression ratio does this piston kit run? \u003cstrong\u003eA:\u003c\/strong\u003e It is rated at 9.5:1, matching the stock figure for the Yamaha Nytro 1049cc engine. Verify your head and gasket setup during the rebuild.\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":51139834445910,"sku":"OO1C22169","price":413.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_e1221251-d05d-4107-815d-97974b3588c8.jpg?v=1794565654","url":"https:\/\/www.solidspare.com\/products\/4894m07900-wiseco-std-piston-kit-for-yamaha-nytro-2006-79-00mm-9-5-1-cr","provider":"Solid Spare","version":"1.0","type":"link"}