{"product_id":"namura-standard-bore-size-b-top-end-repair-kit-for-yamaha-yz450fx-2016-2020-97mm","title":"Namura Standard Bore Size B Top End Repair Kit for Yamaha YZ450FX 2016-2020 97mm","description":"\u003ch2\u003eStandard Bore Size B Top End Repair Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis top end repair kit is engineered for Yamaha YZ450FX models from 2016 to 2020, featuring a 97mm bore with B piston grade.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis complete top end repair kit includes a piston, rings, pin, circlips, and gaskets to restore compression and power. Designed for off-road enthusiasts, it provides all necessary components for a top end rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined piston from high-strength aluminum alloy\u003c\/li\u003e\n\u003cli\u003eMatched piston rings for optimal sealing\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and circlips for secure installation\u003c\/li\u003e\n\u003cli\u003eComplete gasket set for leak-free assembly\u003c\/li\u003e\n\u003cli\u003eB piston grade ensures proper cylinder clearance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ450FX (2016-2020)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the top end after extended use\u003c\/li\u003e\n\u003cli\u003eRestoring lost compression and engine power\u003c\/li\u003e\n\u003cli\u003ePreparing the engine for racing season\u003c\/li\u003e\n\u003cli\u003eReplacing worn piston and rings during maintenance\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\u003e97mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop End Repair Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB\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 How do I verify this kit fits my engine? \u003cstrong\u003eA:\u003c\/strong\u003e Confirm your Yamaha YZ450FX model year and check the existing piston grade (A, B, or C) stamped on the piston dome.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is a break-in procedure necessary? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, follow a proper break-in cycle with varying throttle loads for the first hour to seat the rings.\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":44949843083350,"sku":"SZ1F15740","price":329.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f11a6702-34ea-4449-9d57-4d7119b1fe8d.jpg?v=1781400705","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-size-b-top-end-repair-kit-for-yamaha-yz450fx-2016-2020-97mm","provider":"Solid Spare","version":"1.0","type":"link"}