{"product_id":"namura-size-b-standard-bore-top-end-repair-kit-for-yamaha-yz125-2005-2021-54mm","title":"Namura Size B Standard Bore Top End Repair Kit for Yamaha YZ125 2005-2021 54mm","description":"\u003ch2\u003eNamura Size B Standard Bore Top End Repair Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis Namura Size B Standard Bore Top End Repair Kit for Yamaha provides a complete top end assembly for the YZ125 dirt bike, including a 54mm piston, rings, wrist pin, and bearings to restore engine performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura Size B Standard Bore Top End Repair Kit for Yamaha is a comprehensive top end kit for Yamaha YZ125 motorcycles from 2005 to 2021. The Namura Size B Standard Bore Top End Repair Kit includes a 54mm piston, rings, wrist pin, and bearings for a full top end overhaul. It is designed for riders seeking a reliable replacement for worn components.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e54mm standard bore piston for exact fit\u003c\/li\u003e\n\u003cli\u003eSize B classification ensures proper clearance\u003c\/li\u003e\n\u003cli\u003eHigh-quality ring set for optimal sealing\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and bearings for complete rebuild\u003c\/li\u003e\n\u003cli\u003eDurable construction for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ125 (2005-2021)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross racing\u003c\/li\u003e\n\u003cli\u003eTrail riding\u003c\/li\u003e\n\u003cli\u003eEnduro competition\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds and top end 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\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura Size B Standard Bore Top End Repair Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ125 2005-2021\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 Does this top end kit include a cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a piston and ring kit only; the cylinder is not included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the difference between Size A and Size B? \u003cstrong\u003eA:\u003c\/strong\u003e Size B provides a slightly tighter piston-to-cylinder clearance for specific rebuild needs.\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":44890756874326,"sku":"SZ1F12956","price":153.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_afab4275-6d38-4006-be34-e1ca99127e8c.jpg?v=1781143456","url":"https:\/\/www.solidspare.com\/products\/namura-size-b-standard-bore-top-end-repair-kit-for-yamaha-yz125-2005-2021-54mm","provider":"Solid Spare","version":"1.0","type":"link"}