{"product_id":"wossner-k8897d300-2-2011-2014-polaris-rzr-xp-900-big-bore-forged-piston-kit-3-00mm","title":"WOSSNER K8897D300-2 2011-2014 Polaris RZR XP 900 Big Bore Forged Piston Kit +3.00mm","description":"\u003ch3\u003eMaximum Displacement for Your Polaris RZR XP 900\u003c\/h3\u003e\n\u003cp\u003ePush your RZR beyond factory limits with the WOSSNER K8897D300-2 Big Bore Piston Kit. This +3.00mm oversize (96mm bore) forged twin-piston set is the ultimate performance upgrade for Polaris RZR XP 900 owners looking to recover damaged cylinders or simply gain a significant boost in displacement and torque. Forged from aerospace-grade aluminum, these pistons are engineered to handle the increased loads of a big-bore setup, offering far superior durability over stock cast pistons. Get your Pro Series power upgrade today from Moto-House MX and dominate the trails with confidence.\u003c\/p\u003e\n\n\u003cp\u003eThe technical engineering of the K8897D300-2 is optimized for high-output UTV applications. Each piston features enhanced pin oiling slots and radial boss machining to maintain critical lubrication of the wrist pins during high-stress operation. To ensure a quieter engine and smoother break-in, the skirts are treated with a permanent anti-friction coating. The 11.0:1 compression ratio provides a perfect balance of explosive power and long-term engine reliability. This complete twin-cylinder kit includes two forged pistons, high-performance rings, wrist pins, and pin locks for a comprehensive professional rebuild.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: WOSSNER K8897D300-2 Big Bore Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003e+3.00mm Big Bore (96mm):\u003c\/b\u003e Significantly increases engine displacement for improved low-end torque and overall horsepower.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePro Series Forged Design:\u003c\/b\u003e Aerospace-grade alloy construction provides maximum strength for high-performance 4-stroke use.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eEnhanced Lubrication System:\u003c\/b\u003e Annular grooves and radial boss machining ensure constant oil flow to the wrist pins.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAnti-Friction Skirt Treatment:\u003c\/b\u003e Reduces internal drag and engine noise while protecting the cylinder walls during break-in.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Twin Set:\u003c\/b\u003e Includes two matched pistons and all necessary hardware for a full parallel-twin engine overhaul.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Pro-Tip\u003c\/h3\u003e\n\u003cp\u003eWhen jumping to a +3.00mm (96mm) bore, cylinder wall thickness and cooling are critical. Ensure your cylinders are professionally bored and plate-honed to Wossner's exact clearances, and consider an upgraded cooling system to manage the extra heat generated by the larger displacement.\u003c\/p\u003e\n\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\"\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 \u0026amp; Size\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e2011-2014\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eRZR XP 900 EFI \/ LE \/ EPS \/ 4x4\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e2012-2013\u003c\/td\u003e\n\u003ctd\u003ePolaris\u003c\/td\u003e\n\u003ctd\u003eRZR 4 XP 900 EFI \/ EPS \/ 4x4\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: Does this kit require cylinder boring?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, this is a +3.00mm oversize kit. Your cylinders must be bored and honed to 96.00mm to accommodate these larger pistons.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Is this kit compatible with standard 91 octane fuel?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, the 11.0:1 compression ratio is specifically designed to deliver high performance while remaining safe for use with premium pump gas.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Are the wrist pins included in this kit?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, every Wossner kit at Moto-House MX includes the pistons, rings, wrist pins, and circlips.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eRecommended Pairings:\u003c\/b\u003e Big Bore Top-End Gasket Set, Heavy Duty Cam Chain, and High-Performance 4-Stroke Synthetic Oil.\u003c\/p\u003e\n\n\u003cp\u003eStop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.\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.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"WOSSNER K8897D300-2 Piston Kit\",\n  \"image\": \"\",\n  \"description\": \"High-performance +3.00mm (96mm) big bore forged twin-piston kit for Polaris RZR XP 900 engines. 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