{"product_id":"spi-010-over-bore-top-end-kit-for-yamaha-480-phazer-venture-1991-1999-72-25mm","title":"SPI .010 Over Bore Top End Kit for Yamaha 480 Phazer \u0026 Venture 1991-1999 72.25mm","description":"\u003ch2\u003eSPI .010 Over Bore Top End Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis top end kit includes a piston, rings, wrist pin, and circlips for rebuilding Yamaha 480 Phazer and Venture engines from 1991-1999 with a .010 oversize bore of 72.25mm, restoring compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe SPI .010 Over Bore Top End Kit is a complete piston assembly designed for Yamaha 480 Phazer and Venture snowmobile engines, providing all necessary components to refresh a worn top end. This kit is ideal for mechanics and DIYers tackling a rebuild on these popular 1991-1999 models, using the specified 72.25mm bore.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOversized .010 over bore piston restores cylinder clearance and compression\u003c\/li\u003e\n\u003cli\u003ePrecision-machined 72.25mm piston diameter matches factory oversize specification\u003c\/li\u003e\n\u003cli\u003eIncludes high-quality rings, wrist pin, and circlips for a complete top end rebuild\u003c\/li\u003e\n\u003cli\u003eDesigned to fit Yamaha 480cc two-stroke engines from 1991-1999\u003c\/li\u003e\n\u003cli\u003eSPI aftermarket construction offers reliable performance at a budget-friendly price\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Phazer 480 (1991-1999)\u003c\/li\u003e\n\u003cli\u003efor Yamaha Venture 480 (1991-1999)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding snowmobile engines that have lost compression due to worn piston and rings\u003c\/li\u003e\n\u003cli\u003eRestoring top-end power in high-mileage Phazer and Venture models\u003c\/li\u003e\n\u003cli\u003ePerforming a preventive maintenance overhaul during off-season storage\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\u003e72.25mm (.010 over)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.010 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Displacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e480cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha Phazer \u0026amp; Venture 1991-1999\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 kit compatible with standard bore Yamaha 480 cylinders? \u003cstrong\u003eA:\u003c\/strong\u003e No, this kit is designed for cylinders already bored .010 over; it will not fit a standard bore. Verify your cylinder has been machined to 72.25mm before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the kit include a gasket set? \u003cstrong\u003eA:\u003c\/strong\u003e No, this top end kit covers only the piston assembly; you will need to purchase a separate gasket set for the base and head.\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":44949912289366,"sku":"SZ1F16216","price":395.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_78256558-8f58-4357-8ff2-adde229bda4d.jpg?v=1781401324","url":"https:\/\/www.solidspare.com\/products\/spi-010-over-bore-top-end-kit-for-yamaha-480-phazer-venture-1991-1999-72-25mm","provider":"Solid Spare","version":"1.0","type":"link"}