{"product_id":"namura-standard-bore-size-a-piston-kit-for-yamaha-yz250-wr250-1992-1998-68mm","title":"Namura Standard Bore Size A Piston Kit for Yamaha YZ250 \u0026 WR250 1992-1998 - 68mm","description":"\u003ch2\u003eStandard Bore Size A Piston Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis Standard Bore Size A piston kit is a direct replacement for Yamaha YZ250 and WR250 models from 1992 to 1998, featuring a 68mm bore size.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Standard Bore Size A piston kit from Namura is engineered to restore compression and power in Yamaha YZ250 and WR250 engines. It provides a precise fit for 1992-1998 models, using a 68mm bore. The piston kit includes all necessary components for a complete top-end rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy for durability\u003c\/li\u003e\n\u003cli\u003ePlasma-moly coated rings reduce friction and improve seal\u003c\/li\u003e\n\u003cli\u003eLightweight design reduces reciprocating mass for quicker throttle response\u003c\/li\u003e\n\u003cli\u003eHeat-treated to withstand high operating temperatures\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and circlips for complete installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ250 1992-1998\u003c\/li\u003e\n\u003cli\u003efor Yamaha WR250 1992-1998\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuild for motocross and trail riding\u003c\/li\u003e\n\u003cli\u003eRestoring lost engine compression and power\u003c\/li\u003e\n\u003cli\u003eReplacing worn pistons during routine engine maintenance\u003c\/li\u003e\n\u003cli\u003eCustom engine builds requiring standard bore size\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\u003e68mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ250\/WR250 1992-1998\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 Is this piston kit compatible with aftermarket cylinders? \u003cstrong\u003eA:\u003c\/strong\u003e It is designed for OEM standard bore cylinders; aftermarket cylinders may require different sizing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the kit include the wrist pin bearing? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes a wrist pin and circlips, but no bearing; please check your engine configuration.\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":44890635632726,"sku":"SZ1F12101","price":142.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_e08dc6d7-f5a9-496b-9994-1bee1278e21d.jpg?v=1781142300","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-size-a-piston-kit-for-yamaha-yz250-wr250-1992-1998-68mm","provider":"Solid Spare","version":"1.0","type":"link"}