{"product_id":"2-spi-standard-bore-piston-kits-for-yamaha-ex440-exciter-gp433-gp440-pr440-68mm","title":"2 SPI Standard Bore Piston Kits for Yamaha EX440 Exciter GP433 GP440 PR440 68mm","description":"\u003ch2\u003e2 SPI Standard Bore Piston Kits for Yamaha\u003c\/h2\u003e\u003cp\u003eThis set of two standard bore piston kits provides a direct replacement for Yamaha EX440, Exciter, GP433, GP440, and PR440 models with a 68mm bore, offering OEM cross-reference compatibility for restoring or rebuilding 440cc engines.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThese 2 SPI standard bore piston kits are designed to rebuild Yamaha 440cc snowmobile engines, delivering reliable performance for vintage models such as the EX440, Exciter, GP433, GP440, and PR440. Each kit includes the piston, rings, wrist pin, and circlips, making it a complete solution for engine overhauls. The standard bore configuration ensures direct fitment without the need for cylinder boring.\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\u003eIncludes premium piston rings for proper sealing and compression\u003c\/li\u003e\n\u003cli\u003eEach kit comes with a wrist pin and circlips for easy installation\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM pistons, no modifications required\u003c\/li\u003e\n\u003cli\u003eDesigned for standard 68mm bore, ideal for OEM-spec rebuilds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha EX440\u003c\/li\u003e\n\u003cli\u003efor Yamaha Exciter\u003c\/li\u003e\n\u003cli\u003efor Yamaha GP433\u003c\/li\u003e\n\u003cli\u003efor Yamaha GP440\u003c\/li\u003e\n\u003cli\u003efor Yamaha PR440\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestoration of classic Yamaha snowmobiles\u003c\/li\u003e\n\u003cli\u003eRebuilding 440cc two-stroke engines\u003c\/li\u003e\n\u003cli\u003eReplacing worn or damaged pistons during top-end overhaul\u003c\/li\u003e\n\u003cli\u003eMaintaining performance for vintage snowmobile enthusiasts\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 (Standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 piston kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone (Standard)\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 Are these piston kits compatible with racing applications? \u003cstrong\u003eA:\u003c\/strong\u003e These standard bore kits are intended for stock rebuilds; for high-performance builds, consider forged or oversize options.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What components are included with each kit? \u003cstrong\u003eA:\u003c\/strong\u003e Each kit includes the piston, piston rings, wrist pin, and circlips, providing everything needed for a complete piston replacement.\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":44949782757462,"sku":"SZ1F14800","price":241.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_a64ea633-9482-4d83-8409-dac42c6b114a.jpg?v=1781398905","url":"https:\/\/www.solidspare.com\/products\/2-spi-standard-bore-piston-kits-for-yamaha-ex440-exciter-gp433-gp440-pr440-68mm","provider":"Solid Spare","version":"1.0","type":"link"}