{"product_id":"namura-standard-bore-top-end-rebuild-kit-size-c-for-yamaha-wr450f-2021-2023-97mm","title":"Namura Standard Bore Top End Rebuild Kit Size C for Yamaha WR450F 2021-2023 97mm","description":"\u003ch2\u003eNamura Standard Bore Top End Rebuild Kit Size C for Yamaha WR450F 2021-2023 97mm\u003c\/h2\u003e\u003cp\u003eThis Namura Standard Bore Top End Rebuild Kit Size C supplies the piston, rings, wrist pin, and gaskets needed for a top end rebuild on a 2021-2023 Yamaha WR450F with a standard 97mm bore.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura Standard Bore Top End Rebuild Kit Size C is designed to restore compression and power in Yamaha WR450F motorcycles from 2021 to 2023. This kit includes a precision-machined piston, rings, wrist pin, and a complete gasket set for a reliable top end rebuild. It is intended for engines with a 97mm bore that have not been oversized.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStandard bore piston maintains original cylinder dimensions\u003c\/li\u003e\n\u003cli\u003eIncludes high-strength wrist pin and circlips for secure assembly\u003c\/li\u003e\n\u003cli\u003eFull gasket kit prevents leaks and ensures proper sealing\u003c\/li\u003e\n\u003cli\u003eNamura components are manufactured to OE specifications\u003c\/li\u003e\n\u003cli\u003eSize C denotes correct compression height for the specific model years\u003c\/li\u003e\n\u003cli\u003eRings are pre-gapped for immediate installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha WR450F 2021-2023\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUsed for top end engine rebuilds on Yamaha WR450F dirt bikes\u003c\/li\u003e\n\u003cli\u003eIdeal for restoring lost compression due to worn piston and rings\u003c\/li\u003e\n\u003cli\u003eCommonly performed during off-season maintenance for off-road racing\u003c\/li\u003e\n\u003cli\u003eHelps improve throttle response and reduce oil consumption\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\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha WR450F 2021-2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, Rings, Wrist Pin, 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 does Size C indicate in this kit? \u003cstrong\u003eA:\u003c\/strong\u003e Size C specifies the piston's compression height and ring configuration, ensuring correct fitment for the 2021-2023 Yamaha WR450F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this kit be used if the cylinder has been bored oversize? \u003cstrong\u003eA:\u003c\/strong\u003e No, this kit is designed for a standard 97mm bore; an oversize piston would be required if the cylinder has been machined larger.\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":44949899346006,"sku":"SZ1F16091","price":373.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f45c647b-615c-49d6-9108-d839281bcfa0.jpg?v=1781401156","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-top-end-rebuild-kit-size-c-for-yamaha-wr450f-2021-2023-97mm","provider":"Solid Spare","version":"1.0","type":"link"}