{"product_id":"namura-020-over-bore-top-end-repair-kit-for-polaris-ranger-150-ace-150-57-9mm","title":"Namura .020 Over Bore Top End Repair Kit for Polaris Ranger 150 \u0026 ACE 150 57.9mm","description":"\u003ch2\u003eNamura .020 Over Bore Top End Repair Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis top end repair kit from Namura provides a .020 over bore piston and rings for Polaris Ranger 150 and ACE 150 engines, measuring 57.9mm. It is designed to restore compression and performance after cylinder wear.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .020 over bore top end repair kit is a direct replacement for worn piston and ring assemblies in Polaris Ranger 150 and ACE 150 models. It includes a 57.9mm piston with rings and wrist pin, allowing rebuilding of the cylinder head for improved power and reliability. This kit is an economical solution for engine refurbishment.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOversized .020 over for machining out cylinder wear\u003c\/li\u003e\n\u003cli\u003e57.9mm piston diameter matches standard overbore specification\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings and wrist pin for a complete top end rebuild\u003c\/li\u003e\n\u003cli\u003eManufactured by Namura, a trusted aftermarket supplier\u003c\/li\u003e\n\u003cli\u003ePrecision-machined to close tolerances for reliable sealing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris Ranger 150\u003c\/li\u003e\n\u003cli\u003efor Polaris ACE 150\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUsed for rebuilding engines in Polaris utility vehicles and recreational side-by-sides\u003c\/li\u003e\n\u003cli\u003eCommonly employed during top end overhauls to restore lost compression\u003c\/li\u003e\n\u003cli\u003eIdeal for owners restoring or modifying Polaris 150cc engines\u003c\/li\u003e\n\u003cli\u003eEssential for mechanics servicing Polaris Ranger and ACE models\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 Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 over\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, Rings, Wrist Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolaris Ranger 150 \/ ACE 150\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 Do I need to machine my cylinder to use this overbore kit? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this .020 over kit requires the cylinder to be bored and honed to match the 57.9mm piston size for proper clearance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Are the rings pre-gapped? \u003cstrong\u003eA:\u003c\/strong\u003e The rings are standard and may need final gap adjustment during installation to meet manufacturer specifications.\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":44890409631830,"sku":"SZ1F10917","price":116.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_d1e55963-60f6-4594-b27e-9df09587e33d.jpg?v=1781139098","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-top-end-repair-kit-for-polaris-ranger-150-ace-150-57-9mm","provider":"Solid Spare","version":"1.0","type":"link"}