{"product_id":"727m04100-wiseco-040-piston-kit-for-yamaha-ysr50-1987-1992-41-00-mm","title":"727M04100 Wiseco .040 Piston Kit for Yamaha YSR50 1987-1992 41.00 mm","description":"\u003ch2\u003ePiston Kit for Yamaha YSR50\u003c\/h2\u003e\u003cp\u003eThis Wiseco .040 oversize piston kit for Yamaha YSR50 delivers a 41.00 mm bore replacement piston with rings, wrist pin, and clips, and corresponds to Wiseco part number 727M04100.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Wiseco .040 piston kit for Yamaha YSR50 is a replacement piston assembly for riders rebuilding a worn or scored top end. This piston kit for Yamaha YSR50 restores compression and smooth running to 1987 through 1992 YSR50 models. It suits home mechanics and small-bore restorers who want a dependable oversize piston kit.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged construction for strength under high-rpm small-bore running\u003c\/li\u003e\n\u003cli\u003e41.00 mm oversize bore size, .040 inch over standard\u003c\/li\u003e\n\u003cli\u003eKit includes piston, rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003eWiseco reference 727M04100 for easy cross-checking\u003c\/li\u003e\n\u003cli\u003eDesigned for the Yamaha YSR50 two-stroke single\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YSR50 1987\u003c\/li\u003e\n\u003cli\u003efor Yamaha YSR50 1988\u003c\/li\u003e\n\u003cli\u003efor Yamaha YSR50 1989\u003c\/li\u003e\n\u003cli\u003efor Yamaha YSR50 1990\u003c\/li\u003e\n\u003cli\u003efor Yamaha YSR50 1991\u003c\/li\u003e\n\u003cli\u003efor Yamaha YSR50 1992\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds after a seize or low compression\u003c\/li\u003e\n\u003cli\u003eBore-and-hone jobs that require an oversize piston\u003c\/li\u003e\n\u003cli\u003eTrack and pit bike engines needing a fresh piston\u003c\/li\u003e\n\u003cli\u003eRestoration of older YSR50 motors\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\u003e727M04100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e41.00 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.040 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWiseco\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 come with rings and pin? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, a Wiseco piston kit of this type normally includes the piston, rings, wrist pin, and circlips. \u003cstrong\u003eQ:\u003c\/strong\u003e Will I need to bore the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Since it is a .040 oversize piston, the cylinder must be bored and honed to match the 41.00 mm size.\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":51140093476950,"sku":"OO1C22544","price":252.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_47125d68-68f9-461a-a321-d512018a57f6.jpg?v=1794565900","url":"https:\/\/www.solidspare.com\/products\/727m04100-wiseco-040-piston-kit-for-yamaha-ysr50-1987-1992-41-00-mm","provider":"Solid Spare","version":"1.0","type":"link"}