{"product_id":"namura-040-over-bore-piston-bearing-gasket-kit-for-yamaha-1993-2001-yz80-48mm","title":"Namura .040 Over Bore Piston Bearing \u0026 Gasket Kit for Yamaha 1993-2001 YZ80 48mm","description":"\u003ch2\u003eNamura .040 Over Bore Piston Bearing \u0026amp; Gasket Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis Namura .040 over bore piston bearing and gasket kit replaces the original piston assembly for Yamaha YZ80 models from 1993 to 2001, providing a 48mm bore size for a refreshed top end rebuild. The kit includes a precision-machined piston, rings, wrist pin, bearings, and all necessary gaskets to restore compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura .040 over bore piston bearing and gasket kit is a complete top-end rebuild solution for Yamaha YZ80 motorcycles, designed to bring worn cylinders back to like-new condition. It includes every component needed for a direct swap, saving you time sourcing individual parts, and is built to match original specifications for reliable power delivery.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined 48mm piston from high-silicone aluminum alloy for durability and heat resistance\u003c\/li\u003e\n\u003cli\u003eIncludes premium chrome-plated piston rings for consistent compression and low friction\u003c\/li\u003e\n\u003cli\u003eNeedle bearing wrist pin and cage assembly reduces friction and extends top-end life\u003c\/li\u003e\n\u003cli\u003eComplete gasket set contains all base, head, and exhaust gaskets for a leak-free seal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ80 (1993-2001)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIdeal for motocross and off-road racing where top-end reliability is critical\u003c\/li\u003e\n\u003cli\u003eCommonly used during full engine rebuilds or when restoring a used YZ80 cylinder\u003c\/li\u003e\n\u003cli\u003eSuited for riders who need a direct replacement after a bore or cylinder refinish\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\u003e48.00mm (.040 over)\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, bearings, 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 Does this kit come with the wrist pin circlips? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit includes the wrist pin, circlips, and needle bearing – everything you need for the piston installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this .040 over piston work if my cylinder has already been bored? \u003cstrong\u003eA:\u003c\/strong\u003e This piston is sized for a cylinder that has been bored to 48.00mm, so you must confirm your cylinder bore matches before ordering. If your cylinder is at standard bore or a different oversize, this kit will not fit.\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":44890490273878,"sku":"SZ1F11854","price":136.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_b138ad44-d402-4e7d-b3ad-a379c85df2f3.jpg?v=1781140605","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-bearing-gasket-kit-for-yamaha-1993-2001-yz80-48mm","provider":"Solid Spare","version":"1.0","type":"link"}