{"product_id":"2-namura-piston-ring-kits-for-kawasaki-1982-1990-js-550-sx-550-std-bore-75mm","title":"2 Namura Piston Ring Kits for Kawasaki 1982-1990 JS 550, SX 550 STD Bore 75mm","description":"\u003ch2\u003eNamura Piston Ring Kits for Kawasaki\u003c\/h2\u003e\u003cp\u003eThese two Namura piston ring kits are standard bore 75mm ring sets for Kawasaki JS 550 and SX 550 models from 1982‑1990.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura piston ring kits provide two complete sets of standard bore 75mm rings for Kawasaki JS 550 and SX 550 watercraft. Each kit includes the rings needed to reseal the piston in the cylinder, restoring compression and engine performance. Use these piston ring kits during a top‑end rebuild on 1982‑1990 Kawasaki 550 models.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eManufactured from ductile iron for long wear life\u003c\/li\u003e\n\u003cli\u003ePre‑gapped to factory specifications for quick installation\u003c\/li\u003e\n\u003cli\u003eIncludes top and second rings per piston\u003c\/li\u003e\n\u003cli\u003eDesigned to reduce oil consumption and blow‑by\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM ring sets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Kawasaki JS 550 (1982‑1990)\u003c\/li\u003e\n\u003cli\u003efor Kawasaki SX 550 (1982‑1990)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn‑The‑Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the top end of a Kawasaki 550 jet ski\u003c\/li\u003e\n\u003cli\u003eRestoring lost compression in a high‑mileage engine\u003c\/li\u003e\n\u003cli\u003eReplacing worn rings during a full engine overhaul\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75mm (Standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Sets (4 rings total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Namura\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKawasaki JS 550 \/ SX 550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYear Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1982‑1990\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 Are these rings pre‑gapped or do I need to file them? \u003cstrong\u003eA:\u003c\/strong\u003e They are pre‑gapped to factory specs, but you should always verify end gap clearance during installation to ensure proper fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can these rings be used for a 75.5mm overbore? \u003cstrong\u003eA:\u003c\/strong\u003e No, these are 75mm standard bore rings; oversize rings would be required for a bored cylinder.\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":44849215504470,"sku":"SZ1F06808","price":59.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f9186b40-202c-4dda-82cc-dad8afefb628.jpg?v=1781061349","url":"https:\/\/www.solidspare.com\/products\/2-namura-piston-ring-kits-for-kawasaki-1982-1990-js-550-sx-550-std-bore-75mm","provider":"Solid Spare","version":"1.0","type":"link"}