{"product_id":"2-spi-piston-kits-for-polaris-440-xcf-transport-indy-trail-030-over-bore-68-5mm","title":"2 SPI Piston Kits for Polaris 440 XCF TranSport Indy Trail .030 Over Bore 68.5mm","description":"\u003ch2\u003eSPI Piston Kit .030 Over Bore 68.5mm for Polaris\u003c\/h2\u003e\u003cp\u003eThis set of two SPI piston kits provides .030 over bore 68.5mm pistons for Polaris 440 XCF, TranSport, and Indy Trail snowmobiles, delivering reliable replacement for worn cylinders.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eSPI piston kits are aftermarket replacements for Polaris 440 engines. These .030 over bore 68.5mm pistons restore compression and power in worn cylinders. The SPI piston kit set includes two pistons for a full engine rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy\u003c\/li\u003e\n\u003cli\u003e.030 over bore increases displacement for added power\u003c\/li\u003e\n\u003cli\u003e68.5mm diameter matches stock specifications\u003c\/li\u003e\n\u003cli\u003eDesigned for high-RPM snowmobile engine operation\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings (sold separately if needed)\u003c\/li\u003e\n\u003cli\u003eDirect fit for Polaris 440 XCF, TranSport, and Indy Trail\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris 440 XCF\u003c\/li\u003e\n\u003cli\u003efor Polaris TranSport\u003c\/li\u003e\n\u003cli\u003efor Polaris Indy Trail\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding Polaris 440 snowmobile engines\u003c\/li\u003e\n\u003cli\u003eReplacing worn pistons in high-mileage sleds\u003c\/li\u003e\n\u003cli\u003eRestoring power for trail and cross-country riding\u003c\/li\u003e\n\u003cli\u003eCompetition and recreational use\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\u003e68.5mm\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.030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 pistons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSPI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\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 pistons complete with rings and wrist pins? \u003cstrong\u003eA:\u003c\/strong\u003e This kit includes pistons only; rings and pins should be purchased separately if needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the compression ratio? \u003cstrong\u003eA:\u003c\/strong\u003e The compression ratio matches factory specs for Polaris 440 engines when used with stock head gasket.\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":44949775024214,"sku":"SZ1F14689","price":230.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_37f86c7e-e317-4394-84b1-8f74caf872bd.jpg?v=1781398757","url":"https:\/\/www.solidspare.com\/products\/2-spi-piston-kits-for-polaris-440-xcf-transport-indy-trail-030-over-bore-68-5mm","provider":"Solid Spare","version":"1.0","type":"link"}