{"product_id":"namura-040-over-bore-piston-top-gasket-kit-for-yamaha-350-4-stroke-atvs-84mm","title":"Namura .040 Over Bore Piston \u0026 Top Gasket Kit for Yamaha 350 4-Stroke ATVs 84mm","description":"\u003ch2\u003e.040 Over Bore Piston \u0026amp; Top Gasket Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis .040 over bore piston and top gasket kit is designed for Yamaha 350 4-stroke ATVs, providing the necessary components to restore engine performance after a cylinder bore. The kit includes an 84mm oversize piston and a matching top gasket set, offering a direct replacement for worn-out parts.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis .040 over bore piston and top gasket kit is a high-quality replacement for Yamaha 350 4-stroke ATV engines needing a rebuild. It includes an 84mm oversize piston and gaskets to ensure proper sealing after boring the cylinder, making it ideal for restoring compression and power.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined piston at .040-inch oversize for restored cylinder clearance\u003c\/li\u003e\n\u003cli\u003eIncludes top gasket set for reliable sealing\u003c\/li\u003e\n\u003cli\u003e84mm bore diameter matches Yamaha 350 4-stroke ATV specifications\u003c\/li\u003e\n\u003cli\u003eDesigned for 4-stroke engines requiring a rebuild\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\u003e84mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.040\" (0.040 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha 350 4-Stroke ATVs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston \u0026amp; Top Gasket Kit\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 complete with ring? \u003cstrong\u003eA:\u003c\/strong\u003e This kit includes the piston and top gasket set; piston rings are typically included but verify with manufacturer if not listed separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this be used with a standard bore cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this .040 over bore piston requires the cylinder to be bored to 84mm to match the oversize.\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":44949746679894,"sku":"SZ1F13921","price":186.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_108eaada-ea8c-4f13-9419-60754d52d9fc.jpg?v=1781397826","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-top-gasket-kit-for-yamaha-350-4-stroke-atvs-84mm","provider":"Solid Spare","version":"1.0","type":"link"}