{"product_id":"spi-standard-bore-top-end-repair-kit-for-polaris-900-fusion-rmk-switchback-83mm","title":"SPI Standard Bore Top End Repair Kit for Polaris 900 Fusion RMK Switchback 83mm","description":"\u003ch2\u003eStandard Bore Top End Repair Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis top end repair kit includes all components needed to rebuild the cylinder and piston assembly for Polaris 900 Fusion, RMK, and Switchback models with an 83mm bore, restoring compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe SPI Standard Bore Top End Repair Kit is a complete rebuild solution for Polaris 900 series snowmobiles. This top end repair kit provides pistons, rings, wrist pins, and gaskets to restore factory compression and power. Designed for Polaris 900 engines, this top end repair kit ensures reliable operation in deep snow and rugged terrain.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined pistons with exact 83mm bore sizing\u003c\/li\u003e\n\u003cli\u003eHigh-strength piston rings for optimal sealing and longevity\u003c\/li\u003e\n\u003cli\u003eDurable wrist pins and circlips included\u003c\/li\u003e\n\u003cli\u003eComplete gasket set for a secure top end rebuild\u003c\/li\u003e\n\u003cli\u003eOEM-spec components for direct replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris 900 Fusion\u003c\/li\u003e\n\u003cli\u003efor Polaris 900 RMK\u003c\/li\u003e\n\u003cli\u003efor Polaris 900 Switchback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestores engine compression and power on snowmobiles\u003c\/li\u003e\n\u003cli\u003eEssential for routine top end maintenance every 2-3 seasons\u003c\/li\u003e\n\u003cli\u003eImproves throttle response and acceleration\u003c\/li\u003e\n\u003cli\u003eReplaces worn pistons and rings to prevent engine failure\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\u003e83mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Polaris 900\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 Does this kit include cylinder head gaskets? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit comes with a complete gasket set including base and head gaskets for a thorough rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the recommended break-in procedure after installation? \u003cstrong\u003eA:\u003c\/strong\u003e Follow a gentle break-in for the first hour of operation, varying throttle and avoiding sustained high RPMs to allow rings to seat properly.\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":44949981495382,"sku":"SZ1F16655","price":549.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_f1c1a22d-6a2c-4980-bb26-4b3da7dbbad8.jpg?v=1781401861","url":"https:\/\/www.solidspare.com\/products\/spi-standard-bore-top-end-repair-kit-for-polaris-900-fusion-rmk-switchback-83mm","provider":"Solid Spare","version":"1.0","type":"link"}