{"product_id":"namura-piston-kit-fits-kawasaki-1986-1991-js-300-sx-300-020-over-bore-76-5mm","title":"Namura Piston Kit fits Kawasaki 1986-1991 JS 300 \u0026 SX 300 .020 Over Bore 76.5mm","description":"\u003ch2\u003eNamura Piston Kit for Kawasaki\u003c\/h2\u003e\u003cp\u003eThis Namura piston kit is a replacement piston assembly for Kawasaki JS300 and SX300 personal watercraft models from 1986 to 1991, featuring a 0.020 oversize bore of 76.5mm to restore cylinder compression.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura piston kit is a high-quality replacement component designed for Kawasaki JS300 and SX300 jet skis. This Namura piston kit offers a 0.020 oversize bore of 76.5mm, allowing for cylinder overboring to restore performance and compression. It is an ideal choice for rebuilding Kawasaki 300 series engines from 1986 to 1991.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy\u003c\/li\u003e\n\u003cli\u003eHeat-treated for enhanced durability\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003eOversized bore allows for cylinder overboring up to 0.020\u003c\/li\u003e\n\u003cli\u003eTested for proper clearance and fit\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 SX300 (1986-1991)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePersonal watercraft engine rebuilding\u003c\/li\u003e\n\u003cli\u003eRestoring compression in Kawasaki jet skis\u003c\/li\u003e\n\u003cli\u003eOverboring cylinders to eliminate scoring\u003c\/li\u003e\n\u003cli\u003ePerformance restoration for aged 300 series engines\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\u003e76.5mm (0.020 oversize)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKawasaki JS300, SX300 (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 What is the recommended installation procedure for this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e Always have a professional mechanic verify piston-to-wall clearance and ring gap. Follow the engine service manual for torque specs and break-in procedure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this Namura piston kit include all necessary hardware? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit includes the piston, rings, wrist pin, and circlips for a complete piston assembly.\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":44890408845398,"sku":"SZ1F10894","price":116.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_3dff42db-0949-48dc-bde5-a5264c7121c3.jpg?v=1781139064","url":"https:\/\/www.solidspare.com\/products\/namura-piston-kit-fits-kawasaki-1986-1991-js-300-sx-300-020-over-bore-76-5mm","provider":"Solid Spare","version":"1.0","type":"link"}