{"product_id":"2-namura-piston-ring-kits-for-kawasaki-1982-1990-js-sx-550-020-over-bore-75-5mm","title":"2 Namura Piston Ring Kits for Kawasaki 1982-1990 JS SX 550 .020 Over Bore 75.5mm","description":"\u003ch2\u003e2 Namura Piston Ring Kits for Kawasaki JS SX 550\u003c\/h2\u003e\u003cp\u003eThese two Namura piston ring kits are designed for Kawasaki JS SX 550 models from 1982 to 1990, with a .020 over bore and 75.5mm diameter for rebuilding worn cylinders. Each kit contains high-quality rings that restore compression and improve engine performance in jet skis. This piston ring set is intended for use with matching overbore pistons.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThese Namura piston ring kits are a .020 overbore solution for Kawasaki JS SX 550 engines built between 1982 and 1990, featuring a 75.5mm bore size. They restore proper sealing and compression in worn cylinders, making them ideal for rebuilds on stand-up and sit-down jet skis. Each kit includes two rings per piston, precision-ground for consistent tension and wear resistance.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNamura brand rings manufactured from ductile iron for durability\u003c\/li\u003e\n\u003cli\u003e.020 over size compensates for cylinder wear\u003c\/li\u003e\n\u003cli\u003e75.5mm bore diameter matched to overbore pistons\u003c\/li\u003e\n\u003cli\u003eReduces oil consumption and blow-by\u003c\/li\u003e\n\u003cli\u003eIncludes both compression and oil control rings per kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Kawasaki JS SX 550 (1982-1990)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end engine rebuilds for personal watercraft\u003c\/li\u003e\n\u003cli\u003eRestoring performance after piston seizure or wear\u003c\/li\u003e\n\u003cli\u003eCompetition and recreational jet ski use\u003c\/li\u003e\n\u003cli\u003eOverhauling engines with scored cylinder walls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 kits (4 rings total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverbore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRing Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompression and oil control\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 Do I need to hone the cylinder before installing these rings? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, always hone the cylinder to the correct crosshatch pattern to ensure proper ring seating and oil retention.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can these rings be used with standard bore pistons? \u003cstrong\u003eA:\u003c\/strong\u003e No, they are designed for .020 overbore pistons; using them with standard pistons will result in improper fit and 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":44849182146646,"sku":"SZ1F06794","price":59.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_ccb0eb8f-aa6b-4f29-bf20-e547db1e062a.jpg?v=1781061331","url":"https:\/\/www.solidspare.com\/products\/2-namura-piston-ring-kits-for-kawasaki-1982-1990-js-sx-550-020-over-bore-75-5mm","provider":"Solid Spare","version":"1.0","type":"link"}