{"product_id":"spi-010-over-bore-piston-kit-for-ski-doo-mxz-670-ho-summit-x-670-ho-78-25mm","title":"SPI .010 Over Bore Piston Kit for Ski-Doo MXZ 670 HO \u0026 Summit X 670 HO 78.25mm","description":"\u003ch2\u003eSPI .010 Over Bore Piston Kit for Ski-Doo\u003c\/h2\u003e\u003cp\u003eThe SPI .010 over bore piston kit rebuilds Ski-Doo snowmobile engines with an oversized 78.25mm piston for MXZ 670 HO and Summit X 670 HO models.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis SPI .010 over bore piston kit is designed for Ski-Doo MXZ 670 HO and Summit X 670 HO snowmobiles. It provides a precise 78.25mm bore diameter to restore engine compression and performance. The kit includes a piston, rings, wrist pin, and circlips for a complete rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-strength aluminum alloy piston for durability\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves ensure proper sealing\u003c\/li\u003e\n\u003cli\u003eOversized 78.25mm bore increases displacement for more power\u003c\/li\u003e\n\u003cli\u003eIncludes wrist pin and circlips for easy installation\u003c\/li\u003e\n\u003cli\u003eDesigned to meet OEM specifications for reliable fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Ski-Doo MXZ 670 HO\u003c\/li\u003e\n\u003cli\u003efor Ski-Doo Summit X 670 HO\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestores engine performance on trail and mountain snowmobiles\u003c\/li\u003e\n\u003cli\u003eIdeal for high-mileage engines needing a rebuild\u003c\/li\u003e\n\u003cli\u003eCommonly used in racing and recreational riding\u003c\/li\u003e\n\u003cli\u003eProvides a cost-effective alternative to new engine replacement\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\u003e78.25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Bore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.010\"\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 What is the advantage of an over bore piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e An over bore piston kit lets you machine the cylinder to a larger diameter, restoring compression and extending engine life without replacing the entire engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to rejet the carburetor after installing this kit? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, you may need to adjust jetting to accommodate the increased displacement and ensure proper fuel-air mixture.\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":44949740027990,"sku":"SZ1F13712","price":175.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f3ab623b-de83-4360-a2be-f04a359cc9e8.jpg?v=1781397560","url":"https:\/\/www.solidspare.com\/products\/spi-010-over-bore-piston-kit-for-ski-doo-mxz-670-ho-summit-x-670-ho-78-25mm","provider":"Solid Spare","version":"1.0","type":"link"}