{"product_id":"605m06850-wiseco-020-piston-kit-for-yamaha-yz250-wr250-1988-1991-68-50mm","title":"605M06850 Wiseco .020 Piston Kit for Yamaha YZ250 WR250 1988-1991 68.50mm","description":"\u003ch2\u003eWiseco .020 Piston Kit for Yamaha YZ250 \u0026amp; WR250\u003c\/h2\u003e\u003cp\u003eThis Wiseco .020 overbore piston kit for Yamaha YZ250 and WR250 models (1988-1991) rebuilds the top end with a 68.50 mm piston, cross-referenced to 605M06850.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco .020 piston kit for Yamaha YZ250 and WR250 two-strokes from 1988 through 1991 gives you a fresh top end with a 68.50 mm overbore. The .020 size restores cylinder bore dimensions after wear and keeps compression where it belongs. This piston kit for Yamaha YZ250 and WR250 riders is a practical choice for a scheduled rebuild or a motor that has lost its snap.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e68.50 mm diameter, .020 in overbore\u003c\/li\u003e\n\u003cli\u003eForged aluminum construction for strength under load\u003c\/li\u003e\n\u003cli\u003eWiseco 605M06850 kit reference\u003c\/li\u003e\n\u003cli\u003eRing and pin hardware included for a complete top end\u003c\/li\u003e\n\u003cli\u003eWorks with the cylinder bore renewed to .020 oversize\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ250, 1988-1991\u003c\/li\u003e\n\u003cli\u003efor Yamaha WR250, 1988-1991\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop end rebuilds on two-stroke motocross bikes\u003c\/li\u003e\n\u003cli\u003eRestoring compression on high-hour engines\u003c\/li\u003e\n\u003cli\u003eTrail and off-road riding where dependable power matters\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\u003e605M06850\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e68.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 in overbore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston kit\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 kit require boring the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the .020 overbore size means the cylinder must be machined to match the larger 68.50 mm piston before assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this an original Yamaha part? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a Wiseco piston kit made for Yamaha YZ250 and WR250 fitment and is not an original manufacturer component.\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":51140037902422,"sku":"OO1C22478","price":435.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_42ceb833-4af3-42dc-ba34-0b64dd8dc4a2.jpg?v=1794565926","url":"https:\/\/www.solidspare.com\/products\/605m06850-wiseco-020-piston-kit-for-yamaha-yz250-wr250-1988-1991-68-50mm","provider":"Solid Spare","version":"1.0","type":"link"}