{"product_id":"namura-top-end-repair-kit-for-kawasaki-1986-91-js-sx-300-020-over-bore-76-5mm","title":"Namura Top End Repair Kit for Kawasaki 1986-91 JS \u0026 SX 300 .020 Over Bore 76.5mm","description":"\u003ch2\u003eNamura Top End Repair Kit for Kawasaki (0.020 Over Bore 76.5mm)\u003c\/h2\u003e\u003cp\u003eThis Namura top end repair kit provides all parts needed to rebuild the cylinder and piston assembly for Kawasaki JS 300 and SX 300 personal watercraft from 1986 to 1991. With a 0.020 over bore of 76.5mm, this top end repair kit compensates for cylinder wear and restores compression. It is a complete solution for your top end rebuild.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura top end repair kit contains a high-quality oversize piston, rings, wrist pin, and gaskets specifically designed for Kawasaki JS 300 and SX 300 models requiring a 0.020 over bore (76.5mm). The kit simplifies the top end overhaul process, ensuring reliable performance and a proper fit for 1986-1991 engines with worn cylinders. This top end repair kit is an essential component for maintaining your watercraft's engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes oversize precision-machined piston with high-silicone aluminum alloy for durability\u003c\/li\u003e\n\u003cli\u003eComplete ring set ensures optimal compression and oil control\u003c\/li\u003e\n\u003cli\u003eFull gasket kit for a leak-free seal during reassembly\u003c\/li\u003e\n\u003cli\u003eWrist pin with circlips for secure connection\u003c\/li\u003e\n\u003cli\u003eAll components exceed OEM specifications for reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Kawasaki JS 300 (1986-1991) – requires 0.020 over bore\u003c\/li\u003e\n\u003cli\u003efor Kawasaki SX 300 (1986-1991) – requires 0.020 over bore\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine top end rebuilds on personal watercraft with worn cylinders\u003c\/li\u003e\n\u003cli\u003eRestoring compression and performance on aging Kawasaki JS and SX models\u003c\/li\u003e\n\u003cli\u003eRoutine maintenance and overhaul of 2-stroke engines that have been bored oversize\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 Over)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKawasaki JS 300, SX 300 1986-1991 (overbore)\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 included in this top end repair kit? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes an oversize piston, rings, wrist pin, circlips, and a complete gasket set for the cylinder head and base. Some kits may also include intake and exhaust gaskets; please check the product listing for exact contents.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this kit suitable for a beginner mechanic? \u003cstrong\u003eA:\u003c\/strong\u003e While the top end rebuild is a moderate mechanical task, this kit provides all necessary parts and is designed for a straightforward installation. However, proper tools and service manual are recommended for best results.\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":44890762543190,"sku":"SZ1F12996","price":160.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_dd06c717-f97b-441e-99c1-ef6122680c12.jpg?v=1781143502","url":"https:\/\/www.solidspare.com\/products\/namura-top-end-repair-kit-for-kawasaki-1986-91-js-sx-300-020-over-bore-76-5mm","provider":"Solid Spare","version":"1.0","type":"link"}