{"product_id":"namura-060-over-bore-top-end-rebuild-kit-honda-trx400ex-trx400x-86-5mm","title":"Namura .060 Over Bore Top End Rebuild Kit Honda TRX400EX \u0026 TRX400X 86.5mm","description":"\u003ch2\u003e.060 Over Bore Top End Rebuild Kit (86.5mm) for Honda\u003c\/h2\u003e\u003cp\u003eThis aftermarket top end rebuild kit includes a .060 over bore piston and rings for Honda TRX400EX and TRX400X ATVs, restoring engine performance with a 86.5mm bore size.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis top end rebuild kit is designed for Honda TRX400EX and TRX400X models, delivering a .060 over bore (86.5mm) to refresh worn cylinders. It contains everything needed for a complete top end rebuild, making it ideal for off-road enthusiasts and racers. The kit ensures reliable power restoration and extended engine life.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes .060 over bore piston and rings for increased displacement\u003c\/li\u003e\n\u003cli\u003ePrecision-machined 86.5mm piston for consistent compression\u003c\/li\u003e\n\u003cli\u003eHigh-strength rings reduce blow-by and improve sealing\u003c\/li\u003e\n\u003cli\u003eComplete gasket set for a secure top end reassembly\u003c\/li\u003e\n\u003cli\u003eDesigned to meet demanding off-road conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Honda TRX400EX\u003c\/li\u003e\n\u003cli\u003efor Honda TRX400X\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding and recreational ATV use\u003c\/li\u003e\n\u003cli\u003eCompetition racing requiring reliable engine performance\u003c\/li\u003e\n\u003cli\u003eEngine rebuilding after high-mileage wear\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\u003e86.5mm (.060 over)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop End Rebuild Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHonda TRX400EX \/ TRX400X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura\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 Will this kit fit my TRX400EX? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed for the Honda TRX400EX and TRX400X models with a stock bore of 85.5mm; .060 over bore requires cylinder boring to 86.5mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the kit include a wrist pin and circlips? \u003cstrong\u003eA:\u003c\/strong\u003e The kit typically includes the piston, rings, and top end gaskets; confirm with the listing for additional components.\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":44949769125974,"sku":"SZ1F14516","price":219.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_7df79a43-629a-4e14-9af6-056a4fe9024f.jpg?v=1781398540","url":"https:\/\/www.solidspare.com\/products\/namura-060-over-bore-top-end-rebuild-kit-honda-trx400ex-trx400x-86-5mm","provider":"Solid Spare","version":"1.0","type":"link"}