{"product_id":"namura-standard-bore-piston-kit-for-polaris-400l-big-boss-400l-1994-1997-83mm","title":"Namura Standard Bore Piston Kit for Polaris 400L \/ Big Boss 400L 1994-1997 83mm","description":"\u003ch2\u003eStandard Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis is a replacement standard bore piston kit for Polaris 400L and Big Boss 400L ATVs from 1994-1997, featuring an 83mm bore size to restore engine compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis standard bore piston kit is a direct replacement for Polaris 400L and Big Boss 400L models built between 1994 and 1997. It includes a piston, rings, wrist pin, and circlips to rebuild the top end and bring back lost power. Designed for the 83mm bore, this piston kit ensures reliable operation in utility and recreational ATV applications.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e83mm bore size matches original Polaris 400L specifications\u003c\/li\u003e\n\u003cli\u003eDurable cast piston withstands high combustion temperatures\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wrist pin ensures smooth connecting rod articulation\u003c\/li\u003e\n\u003cli\u003eHigh-quality ring set reduces blow-by and improves compression\u003c\/li\u003e\n\u003cli\u003eKit includes all necessary components for a complete top-end rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Polaris 400L 1994-1997\u003c\/li\u003e\n\u003cli\u003efor Polaris Big Boss 400L 1994-1997\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTrail riding and recreational ATV use\u003c\/li\u003e\n\u003cli\u003eFarm and ranch utility tasks requiring reliable engine output\u003c\/li\u003e\n\u003cli\u003eRebuilding worn top ends to restore lost horsepower\u003c\/li\u003e\n\u003cli\u003eCompetition or heavy-use machines needing periodic piston 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\u003e83mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolaris 400L \/ Big Boss 400L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1994-1997\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura\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 piston kit a direct fit for my Polaris 400L? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed as a direct replacement for 1994-1997 Polaris 400L and Big Boss 400L models with the 83mm bore, but verify your engine serial number to confirm compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need any special tools to install this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e Standard engine rebuilding tools such as a piston ring compressor and torque wrench are recommended for proper installation.\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":44890637697110,"sku":"SZ1F12129","price":142.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_c2b95e1e-a047-4823-a8c2-bc0b60237e0c.jpg?v=1781142337","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-kit-for-polaris-400l-big-boss-400l-1994-1997-83mm","provider":"Solid Spare","version":"1.0","type":"link"}