{"product_id":"wossner-k8897da-2-polaris-rzr-xp-900-pro-series-forged-twin-piston-kit-standard-a","title":"WOSSNER K8897DA-2 Polaris RZR XP 900 Pro Series Forged Twin Piston Kit Standard A","description":"\u003ch3\u003ePro Series Forged Precision for Polaris RZR XP 900\u003c\/h3\u003e\n\u003cp\u003eRebuild your RZR with the elite engineering of the WOSSNER K8897DA-2 Pro Series Piston Kit. Specifically designed for the high-revving Polaris RZR XP 900 parallel-twin engine, this Standard Size A (93mm) kit is for riders who demand the best in reliability and performance. Forged from aerospace-grade aluminum alloy, these pistons provide a major strength upgrade over stock cast parts, allowing your engine to handle the intense heat and stress of dunes, trails, and racing. Available now at Moto-House MX, this kit is the professional's choice for a factory-spec top-end restoration that lasts.\u003c\/p\u003e\n\n\u003cp\u003eThe technical superiority of the K8897DA-2 lies in its Pro Series design. Each piston features enhanced pin oiling slots and radial boss machining, ensuring consistent wrist pin lubrication during high-RPM operation. To minimize drag, the skirts are treated with a specialized dry-film coating that reduces friction and engine noise while improving the critical break-in process. With a 11.0:1 compression ratio and tight piston-to-wall clearances, you’ll experience smooth, efficient power delivery across the entire powerband. This twin-cylinder kit is fully inclusive, containing two forged pistons, rings, wrist pins, and pin locks for a seamless professional installation.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: WOSSNER K8897DA-2 Pro Series Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eTwin-Cylinder Pro Series Set:\u003c\/b\u003e includes two high-strength forged pistons balanced for the Polaris 900cc twin-engine platform.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eStandard Size A (92.95mm Piston):\u003c\/b\u003e Precision-tailored for 93.00mm cylinders that are brand new or freshly replated to factory specs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAdvanced Lubrication Tech:\u003c\/b\u003e Radial boss machining and annular grooves optimize oil flow to the wrist pins under racing conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePerformance Skirt Coating:\u003c\/b\u003e Advanced anti-friction treatment ensures a quieter running engine and improved break-in durability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eHigh-Efficiency Compression:\u003c\/b\u003e 11.0:1 ratio provides consistent power while maintaining reliability for long-distance off-road riding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Pro-Tip\u003c\/h3\u003e\n\u003cp\u003eWhen installing this Pro Series kit in your RZR 900, always use a precision feeler gauge to verify your ring end gaps. Maintaining the exact Wossner-specified gap is essential for preventing ring expansion issues in high-heat 4-stroke applications.\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: Is this a big bore kit or a standard replacement?\u003c\/b\u003e\u003cbr\u003e\nA: This is a Standard Size A replacement (93.00mm bore), designed to fit original or replated factory cylinders without boring.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What is the difference between Pro Series and Standard Series?\u003c\/b\u003e\u003cbr\u003e\nA: Pro Series pistons often feature specialized machining for weight reduction and enhanced lubrication, making them ideal for high-performance use.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Do I need to buy two kits for my RZR 900?\u003c\/b\u003e\u003cbr\u003e\nA: No, the \"K\" prefix and \"-2\" suffix confirm that this kit contains both pistons and all hardware required for your twin-cylinder engine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eRecommended Pairings:\u003c\/b\u003e Polaris XP 900 Top-End Gasket Kit, High-Performance Cam Chain, and Synthetic 4-Stroke UTV Engine 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 K8897DA-2 Piston Kit\",\n  \"image\": \"\",\n  \"description\": \"High-performance Standard Size A (93mm) forged twin-piston kit for Polaris RZR XP 900 engines. 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