{"product_id":"653m04000-wiseco-std-piston-kit-for-yamaha-pw50-1981-2024-40-00-mm","title":"653M04000 Wiseco Std Piston Kit for Yamaha PW50 1981-2024 40.00 mm","description":"\u003ch2\u003eWiseco Std Piston Kit for Yamaha PW50\u003c\/h2\u003e\u003cp\u003eThis Wiseco Std piston kit for Yamaha PW50 models is a 40.00 mm standard bore piston assembly that restores compression and top-end power on worn two-stroke minibike engines, cross-referencing OEM part 653M04000.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco Std piston kit for Yamaha PW50 models is a standard bore replacement piston assembly for tired top ends. The 40.00 mm piston restores compression and performance without changing the original cylinder bore size. It suits riders and mechanics handling a straightforward top-end rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged piston construction for strength under two-stroke combustion loads\u003c\/li\u003e\n\u003cli\u003eStandard bore size keeps the original cylinder dimensions unchanged\u003c\/li\u003e\n\u003cli\u003e40.00 mm piston diameter matches the factory bore specification\u003c\/li\u003e\n\u003cli\u003eDesigned as a direct-fit replacement for the stock piston assembly\u003c\/li\u003e\n\u003cli\u003eKit includes piston and components needed for top-end reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha PW50, 1981-2024\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds on PW50 minibikes\u003c\/li\u003e\n\u003cli\u003eRestoring compression after normal two-stroke wear\u003c\/li\u003e\n\u003cli\u003eRefreshing engines that have experienced piston scoring\u003c\/li\u003e\n\u003cli\u003eRoutine maintenance on older machines still in regular use\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\u003e653M04000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40.00 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\u003eStandard (Std)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha PW50, 1981-2024\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 machine work on the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, a standard bore piston is intended for a cylinder that still measures within factory specification and needs only honing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I install this piston without checking ring end gap? \u003cstrong\u003eA:\u003c\/strong\u003e No, ring end gap should always be measured and set to specification before final assembly for reliable sealing.\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":51140131717206,"sku":"OO1C22599","price":217.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_e07b592a-826c-4ef7-9521-cf5d260b88c2.jpg?v=1794490926","url":"https:\/\/www.solidspare.com\/products\/653m04000-wiseco-std-piston-kit-for-yamaha-pw50-1981-2024-40-00-mm","provider":"Solid Spare","version":"1.0","type":"link"}