{"product_id":"559m05650-wiseco-piston-kit-020-for-yamaha-yz125-1986-1988-56-50-mm","title":"559M05650 Wiseco Piston Kit .020 for Yamaha YZ125 1986-1988 56.50 mm","description":"\u003ch2\u003ePiston Kit for Yamaha YZ125\u003c\/h2\u003e\u003cp\u003eThis Wiseco .020 piston kit for Yamaha YZ125 brings top-end compression back to 1986-1988 models, cross-referencing OEM part 559M05650 at a 56.50 mm bore.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis .020 over piston kit for Yamaha YZ125 is a complete top-end replacement made for two-stroke engines that need a minor bore cleanup. The 56.50 mm bore size suits cylinders honed just past standard, and the kit ships with the piston, rings, wrist pin, and circlips for reassembly. It is intended for riders and mechanics servicing 1986-1988 YZ125 machines.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged piston construction for durability under high-rpm two-stroke loads\u003c\/li\u003e\n\u003cli\u003e.020 oversize bore of 56.50 mm for light cylinder cleanup\u003c\/li\u003e\n\u003cli\u003eRing set matched to the piston for reliable sealing\u003c\/li\u003e\n\u003cli\u003eWrist pin and circlips included for a complete top-end refresh\u003c\/li\u003e\n\u003cli\u003eCross-references OEM number 559M05650 for easy verification\u003c\/li\u003e\n\u003cli\u003eBuilt for the 1986-1988 Yamaha YZ125 engine platform\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 mild cylinder wear\u003c\/li\u003e\n\u003cli\u003eMotocross and trail riding on two-stroke YZ125 machines\u003c\/li\u003e\n\u003cli\u003eRestoring compression on high-hour engines\u003c\/li\u003e\n\u003cli\u003eRace prep and routine piston replacement\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\u003e559M05650\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e56.50 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.020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMachine Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha YZ125 1986-1988\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 fit a standard bore cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a .020 oversize piston at 56.50 mm, so the cylinder must be bored or honed to match before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is included in the kit? \u003cstrong\u003eA:\u003c\/strong\u003e It ships with the piston, ring set, wrist pin, and circlips for a complete top-end install.\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":51140080828502,"sku":"OO1C22525","price":323.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_7dc1491c-131d-4bd1-a7c4-8967cf754347.jpg?v=1794565925","url":"https:\/\/www.solidspare.com\/products\/559m05650-wiseco-piston-kit-020-for-yamaha-yz125-1986-1988-56-50-mm","provider":"Solid Spare","version":"1.0","type":"link"}