{"product_id":"wossner-8097d100-piston-kit-polaris-scrambler-sportsman-xplorer-400-1-00mm-oversize","title":"Wossner 8097D100 Piston Kit - Polaris Scrambler Sportsman Xplorer 400 +1.00mm Oversize","description":"\u003ch3\u003eWossner 8097D100 Standard Series Forged 2-Stroke Piston Kit - +1.00mm Oversize\u003c\/h3\u003e\n\n\u003cp\u003eRestore the legendary power of your Polaris 400cc liquid-cooled engine with the Wossner 8097D100 Piston Kit. Specifically engineered for the high-performance Polaris 2-stroke engine found in the Scrambler, Sportsman, and Xplorer 400 series, this +1.00mm oversize forged kit is the professional choice for cylinders that require boring to clear up heavy scoring or wear. At Moto-House MX, we know these 400cc engines are known for their impressive torque; upgrading to a Wossner forged piston provides superior structural integrity and heat resistance compared to original cast pistons, ensuring your machine stays reliable on the trail or the job site.\u003c\/p\u003e\n\n\u003cp\u003eThe 8097D100 features a robust dual-ring configuration, which is essential for maintaining a consistent compression seal and improving heat transfer in high-displacement 2-stroke engines. To ensure smooth operation and reduced engine noise, Wossner applies a permanent molybdenum disulphide skirt coating that minimizes friction and protects the cylinder wall from wear. Precision-machined for an 84.00mm finished bore, this 83.93mm piston kit is the ultimate solution for refreshing your high-hour Polaris 400 engine.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8097D100 Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003e+1.00mm Oversize (83.93mm):\u003c\/b\u003e The ideal choice for cylinders requiring a precision bore to an 84.00mm finished size to restore a perfect mechanical seal.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eDual Ring Configuration:\u003c\/b\u003e Provides enhanced cooling and a reliable, long-term compression seal for the high-torque demands of a 400cc 2-stroke.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAerospace-Grade Forging:\u003c\/b\u003e Crafted for significantly higher strength and durability than standard cast pistons, offering peace of mind during aggressive riding.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent skirt treatment reduces internal drag and piston rock, leading to a quieter engine and a safer break-in period.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eOptimized Machining:\u003c\/b\u003e Engineered for lightness to improve throttle response while maintaining maximum strength in the crown and skirt walls.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Kit:\u003c\/b\u003e Includes the high-performance forged +1.00mm piston, rings, wrist pin, and circlips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e The Polaris 400 2-stroke is a powerhouse, but it generates significant heat. When moving to a +1.00mm oversize, it is critical that your cylinder is precision-bored and honed by a professional machine shop to exactly 84.00mm. This ensures the correct piston-to-wall clearance for a forged assembly. For a professional-grade rebuild, always install with a fresh top-end gasket kit and utilize premium 2-stroke oil to protect your new forged assembly from the very first start.\u003c\/p\u003e\n\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth\u003eYear Range\u003c\/th\u003e\n            \u003cth\u003eVehicle Brand\u003c\/th\u003e\n            \u003cth\u003eVehicle Model\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1995-2003\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eScrambler 400 \/ 4x4 \/ 2x4\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1994-2003\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eSportsman 400 \/ 400L \/ 4x4\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1995-2003\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eXplorer 400 \/ 400L \/ 4x4 \/ 4x2\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1995-2003\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eXpress 400 \/ 400L \/ 4x4\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1995-2003\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eBig Boss 400L \/ Hawkeye 400 \/ Trail Blazer 400\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: Why should I choose a forged Wossner piston for my Polaris 400?\u003c\/b\u003e\u003cbr\u003e\nA: Forged pistons are much stronger than the factory cast pistons. In a high-displacement 2-stroke like the Polaris 400, forging provides the density and heat resistance needed to prevent cracks and withstand the stress of high-RPM operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: What is the advantage of the +1.00mm oversize?\u003c\/b\u003e\u003cbr\u003e\nA: It allows you to save a cylinder that has deep scratches or is worn beyond the limits of a smaller oversize. By boring to 84.00mm, you create a fresh, round surface for the new piston and rings to seal against.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Does this kit include the wrist pin bearing?\u003c\/b\u003e\u003cbr\u003e\nA: This kit includes the forged piston, rings, wrist pin, and circlips. The needle bearing for the small end is sold separately. We always recommend replacing the bearing whenever a new piston is installed.\u003c\/p\u003e\n\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Top End Gasket Set:\u003c\/b\u003e Essential for maintaining proper compression and preventing coolant leaks.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eHigh-Performance 2-Stroke Premix Oil:\u003c\/b\u003e Ensure your new oversize forged piston is lubricated and protected under heavy loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eRestore your machine’s power and precision today. Buy now at Moto-House MX!\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eMoto-House MX – Choice of Champions\u003c\/b\u003e – is located in Clermont\/Montverde, FL. The Best Motocross\/UTV \u0026amp; ATV Shop in Central Florida. Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Wossner 8097D100 Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8097D100 Forged 2-Stroke Dual Ring Piston Kit for Polaris Scrambler, Sportsman, and Xplorer 400. +1.00mm Oversize (83.93mm) for 84.00mm bore.\",\n  \"sku\": \"8097D100\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Wossner\"\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/motohousemx.com\/products\/wossner-8097d100-piston-kit\",\n    \"priceCurrency\": \"USD\",\n    \"availability\": \"https:\/\/schema.org\/InStock\"\n  }\n}\n\u003c\/script\u003e","brand":"WOSSNER","offers":[{"title":"Default Title","offer_id":44495992684627,"sku":"8097D100","price":142.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/59823.png?v=1776229649","url":"https:\/\/motohousemx.com\/products\/wossner-8097d100-piston-kit-polaris-scrambler-sportsman-xplorer-400-1-00mm-oversize","provider":"Moto-House MX","version":"1.0","type":"link"}