{"product_id":"559m05750-wiseco-piston-kit-060-for-yamaha-yz125-1986-1988-57-50-mm","title":"559M05750 Wiseco Piston Kit .060 for Yamaha YZ125 1986-1988 57.50 mm","description":"\u003ch2\u003eWiseco .060 Piston Kit for Yamaha YZ125\u003c\/h2\u003e\u003cp\u003eThis Wiseco .060 piston kit, cross-referenced as 559M05750, is a 57.50 mm oversize piston assembly that restores compression and top-end power to a worn Yamaha YZ125 cylinder.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco .060 piston kit is built for riders rebuilding the top end of a Yamaha YZ125 two-stroke. The 57.50 mm oversize piston works with a freshly bored or re-plated cylinder to bring back lost compression and throttle response. It suits racers and weekend riders who want dependable forged piston performance in a 1986 through 1988 YZ125 engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged aluminum construction for strength under high-rpm two-stroke loads\u003c\/li\u003e\n\u003cli\u003e57.50 mm oversize bore size matches a .060 over cylinder rebore\u003c\/li\u003e\n\u003cli\u003eWiseco 559M series piston design built for YZ125 applications\u003c\/li\u003e\n\u003cli\u003eKit includes piston, rings, wrist pin, and circlips for a complete top-end refresh\u003c\/li\u003e\n\u003cli\u003eThermal expansion characteristics suited to sustained motocross use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ125, 1986\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ125, 1987\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ125, 1988\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds after a piston seizure or loss of compression\u003c\/li\u003e\n\u003cli\u003eMotocross and off-road riding on 1986 to 1988 YZ125 machines\u003c\/li\u003e\n\u003cli\u003eCylinder rebore projects requiring an oversize piston\u003c\/li\u003e\n\u003cli\u003ePreventive refresh during a race season teardown\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\u003e559M05750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.060 in\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 Will this piston fit my stock YZ125 cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a .060 oversize piston that requires a cylinder bored or re-plated to 57.50 mm before installation. Confirm your cylinder's current bore before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is included in this Wiseco piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e Wiseco piston kits for this application typically include the piston, rings, wrist pin, and circlips. Check the listing contents to confirm exactly what ships.\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":51140080042070,"sku":"OO1C22523","price":376.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_6807eeff-0853-4d24-96c3-f033e60bc9e8.jpg?v=1794565920","url":"https:\/\/www.solidspare.com\/products\/559m05750-wiseco-piston-kit-060-for-yamaha-yz125-1986-1988-57-50-mm","provider":"Solid Spare","version":"1.0","type":"link"}