{"product_id":"549m07750-wiseco-060-piston-kit-for-kawasaki-js300-300sx-1986-1991-77-50-mm","title":"549M07750 Wiseco .060 Piston Kit for Kawasaki JS300 300SX 1986-1991 77.50 mm","description":"\u003ch2\u003eWiseco .060 Piston Kit for Kawasaki JS300\/300SX\u003c\/h2\u003e\u003cp\u003eThis Wiseco .060 overbore piston kit for Kawasaki JS300 and 300SX models brings the bore to 77.50 mm, with OEM cross-reference 549M07750, to rebuild a worn two-stroke top end.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco .060 piston kit for Kawasaki JS300 and 300SX jet skis is built for riders who need a larger overbore to save a damaged cylinder. The 77.50 mm bore takes the cylinder out to its practical limit, making it a common choice on high-hour engines that have already been rebuilt. It serves owners restoring or servicing 1986-1991 JS300 and 300SX models with a reliable forged piston kit for Kawasaki applications.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged piston construction for durability in two-stroke service\u003c\/li\u003e\n\u003cli\u003e.060 in \/ 77.50 mm overbore size for heavily worn bores\u003c\/li\u003e\n\u003cli\u003eKit includes piston, rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003eCross-references Wiseco 549M07750 for straightforward lookup\u003c\/li\u003e\n\u003cli\u003eMade for the 300 cc Kawasaki stand-up engine family\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Kawasaki JS300, 1986-1991\u003c\/li\u003e\n\u003cli\u003efor Kawasaki JS300SX, 1986-1991\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFull top end rebuild on a tired 300 cc stand-up jet ski\u003c\/li\u003e\n\u003cli\u003eBoring out a scored or pitted cylinder to a clean bore\u003c\/li\u003e\n\u003cli\u003eRestoration projects where original pistons are no longer available\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\u003e549M07750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e77.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverbore\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\u003ePiston Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Kawasaki JS300\/300SX, 1986-1991\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 Can I run this piston in a standard bore cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, the .060 overbore requires the cylinder to be bored and honed to 77.50 mm first. Confirm with a machinist that the cylinder wall has enough material left.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this an original Kawasaki part? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a Wiseco piston kit made for Kawasaki JS300 and 300SX applications. It is an aftermarket replacement rather than an OEM Kawasaki piston.\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":51140481220694,"sku":"OO1C22851","price":395.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_7ef11c00-2402-4489-a42d-32975d587996.jpg?v=1794566142","url":"https:\/\/www.solidspare.com\/products\/549m07750-wiseco-060-piston-kit-for-kawasaki-js300-300sx-1986-1991-77-50-mm","provider":"Solid Spare","version":"1.0","type":"link"}