{"product_id":"namura-standard-bore-piston-kit-size-a-for-yamaha-yz250f-wr250f-2001-2004-77mm","title":"Namura Standard Bore Piston Kit Size A for Yamaha YZ250F \u0026 WR250F 2001-2004 77mm","description":"\u003ch2\u003eNamura Standard Bore Piston Kit Size A for Yamaha YZ250F \u0026amp; WR250F\u003c\/h2\u003e\u003cp\u003eThis Namura Standard Bore Piston Kit Size A is a direct replacement 77mm piston for Yamaha YZ250F and WR250F motorcycles from 2001 to 2004, designed for top-end rebuilds.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura Standard Bore Piston Kit Size A provides a reliable 77mm replacement piston for Yamaha YZ250F and WR250F engines. It is crafted to meet OEM specifications and includes all necessary components for a smooth rebuild. This kit is ideal for restoring compression and performance in 2001-2004 Yamaha dirt bikes.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e77mm bore size\u003c\/li\u003e\n\u003cli\u003eStandard bore design\u003c\/li\u003e\n\u003cli\u003eIncludes piston, rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy\u003c\/li\u003e\n\u003cli\u003eSize A indicates standard OEM fit\u003c\/li\u003e\n\u003cli\u003eDesigned for 2001-2004 Yamaha YZ250F and WR250F\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ250F (2001-2004)\u003c\/li\u003e\n\u003cli\u003efor Yamaha WR250F (2001-2004)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end engine rebuilds\u003c\/li\u003e\n\u003cli\u003eRestoring compression on high-hour dirt bikes\u003c\/li\u003e\n\u003cli\u003eRacing or trail riding maintenance\u003c\/li\u003e\n\u003cli\u003eReplacing worn pistons on Yamaha 250F four-strokes\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 Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e77mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSize A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Engine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ250F \/ WR250F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYear Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2001-2004\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 wrist pin and clips? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the Namura Standard Bore Piston Kit comes complete with rings, wrist pin, and circlips for a full rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is Size A the same as OEM standard? \u003cstrong\u003eA:\u003c\/strong\u003e Size A denotes the standard production bore size, matching the original factory piston dimensions for 2001-2004 YZ250F and WR250F models.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44949784690774,"sku":"SZ1F14836","price":241.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_cb160340-d828-4f4e-a8d6-332fe018745b.jpg?v=1781398947","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-kit-size-a-for-yamaha-yz250f-wr250f-2001-2004-77mm","provider":"Solid Spare","version":"1.0","type":"link"}