{"product_id":"namura-standard-bore-size-b-top-end-repair-kit-for-yamaha-wr450f-2007-2015-95mm","title":"Namura Standard Bore Size B Top End Repair Kit for Yamaha WR450F 2007-2015 95mm","description":"\u003ch2\u003eNamura Standard Bore Size B Top End Repair Kit for Yamaha WR450F\u003c\/h2\u003e\u003cp\u003eThis top end repair kit fits Yamaha WR450F models from 2007 to 2015, using standard bore size B with a 95mm piston for a direct drop-in rebuild.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura Standard Bore Size B Top End Repair Kit is a complete piston and cylinder assembly for Yamaha WR450F motorcycles made between 2007 and 2015. It uses a 95mm piston at standard size B, matching factory specifications for reliable performance. This kit is designed for owners restoring or rebuilding the top end of their WR450F without needing a rebore.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes 95mm piston (Size B) with rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003ePrecision-machined cylinder sleeve for accurate fit\u003c\/li\u003e\n\u003cli\u003eCompatible with stock Yamaha WR450F cylinder head and crankshaft\u003c\/li\u003e\n\u003cli\u003eStandard bore dimensions avoid additional machining costs\u003c\/li\u003e\n\u003cli\u003eAll gaskets and seals provided for a complete installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha WR450F (2007-2015)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the top end of enduro and off-road motorcycles\u003c\/li\u003e\n\u003cli\u003eReplacing worn pistons and cylinders after high-mileage use\u003c\/li\u003e\n\u003cli\u003eRestoring compression and power for competitive riding\u003c\/li\u003e\n\u003cli\u003eMaintaining factory bore size for reliable long-term operation\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\u003e95mm (Standard Size B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha WR450F 2007-2015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCast aluminum with coated skirt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, rings, wrist pin, circlips, cylinder, gaskets\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 difference between Size A and Size B pistons? \u003cstrong\u003eA:\u003c\/strong\u003e Size B is slightly larger than Size A to compensate for minor cylinder wear; always measure your existing bore to confirm which size is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this kit work with a 2016 WR450F? \u003cstrong\u003eA:\u003c\/strong\u003e No, this kit is specifically for 2007-2015 models; 2016 and later models have a different engine design.\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":44949840494678,"sku":"SZ1F15694","price":329.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_d466aaaf-e1e3-4926-a5c6-1f9b125943b1.jpg?v=1781400095","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-size-b-top-end-repair-kit-for-yamaha-wr450f-2007-2015-95mm","provider":"Solid Spare","version":"1.0","type":"link"}