{"product_id":"namura-standard-bore-piston-kit-size-a-for-yamaha-yz250f-wr250f-2005-2013-77mm","title":"Namura Standard Bore Piston Kit Size A for Yamaha YZ250F \u0026 WR250F 2005-2013 77mm","description":"\u003ch2\u003eStandard Bore Piston Kit Size A for Yamaha YZ250F \u0026amp; WR250F 2005-2013 77mm\u003c\/h2\u003e\u003cp\u003eThis standard bore piston kit, size A, is a replacement part from Namura designed for Yamaha YZ250F and WR250F models from 2005 to 2013 with a 77mm bore, providing durable performance and easy installation.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe standard bore piston kit size A (77mm) from Namura is a high-quality replacement for Yamaha YZ250F and WR250F motorcycles made between 2005 and 2013, offering reliable compression and smooth operation. It serves as a direct fit for these popular off-road and dual-sport models. This standard bore piston kit delivers consistent power for both recreational and competitive riders.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from premium aluminum alloy for strength and lightweight performance\u003c\/li\u003e\n\u003cli\u003eIncludes rings and wrist pin for a complete piston replacement\u003c\/li\u003e\n\u003cli\u003eDirect replacement design for simple installation without modifications\u003c\/li\u003e\n\u003cli\u003eMatches OEM specifications for bore size and clearance\u003c\/li\u003e\n\u003cli\u003eSize A ensures proper fit within factory tolerance ranges\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ250F (2005-2013)\u003c\/li\u003e\n\u003cli\u003efor Yamaha WR250F (2005-2013)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIdeal for rebuilding top ends on Yamaha YZ250F motocross bikes\u003c\/li\u003e\n\u003cli\u003eSuitable for restoring compression on Yamaha WR250F enduro models\u003c\/li\u003e\n\u003cli\u003eCommonly used during full engine overhaul or performance restoration\u003c\/li\u003e\n\u003cli\u003eWorks for both track riding and trail riding applications\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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e77mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2005-2013\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 piston kit include a wrist pin? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit includes a wrist pin and retaining clips, along with piston rings for a complete installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this standard bore piston be used with a cylinder that has been reconditioned? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, as long as the cylinder is within factory specifications for a 77mm standard bore, this piston can be used with a properly honed or reconditioned cylinder.\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":44949786067030,"sku":"SZ1F14877","price":241.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_ff6b8937-fee7-40c3-a1c1-86fac565551f.jpg?v=1781398998","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-kit-size-a-for-yamaha-yz250f-wr250f-2005-2013-77mm","provider":"Solid Spare","version":"1.0","type":"link"}