{"product_id":"wossner-8169dc-piston-kit-ktm-250-sx-xc-husqvarna-tc-te-gas-gas-250-size-c","title":"Wossner 8169DC Piston Kit - KTM 250 SX\/XC Husqvarna TC\/TE Gas Gas 250 Size C","description":"\u003ch3\u003eWossner 8169DC Premium Forged 2-Stroke Piston Kit - Size C\u003c\/h3\u003e\n\n\u003cp\u003eMaintain the race-winning edge of your European 2-stroke with the Wossner 8169DC Piston Kit. Specifically engineered for KTM, Husqvarna, and Gas Gas 250cc cylinders that require a Size C fitment, this kit is the professional choice for restoring Factory Quality power and reliability. At Moto-House MX, we provide the high-performance forged components required to maintain peak compression in seasoned fuel-injected (TPI) and carbureted 250cc engines.\u003c\/p\u003e\n\n\u003cp\u003eForged from aerospace-grade aluminum alloy, this piston offers superior structural integrity and thermal resistance compared to standard cast alternatives. The permanent skirt coating is a critical feature, reducing internal friction and piston rock for a quieter engine and smoother throttle response. This Size C piston (66.36mm) is designed for cylinders with a 66.42mm bore, providing the precise clearances needed for optimal performance in cylinders that have seen extended use.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8169DC Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eStandard Size C (66.36mm):\u003c\/b\u003e Precision-engineered for 66.42mm bores to maintain perfect factory tolerances in seasoned cylinders.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAerospace Forged Alloy:\u003c\/b\u003e Premium aluminum construction for maximum durability and resistance to high-temperature fatigue.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent coating reduces wear and mechanical noise for a more efficient engine.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eDual-Ring Design:\u003c\/b\u003e Optimized for a consistent combustion seal and maximum compression across the powerband.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Assembly:\u003c\/b\u003e Kit includes the forged piston, high-quality rings, wrist pin, and clips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e Modern European 250cc cylinders feature high-quality Nikasil plating, but natural wear is inevitable. Size C is the ideal selection for a cylinder that has seen several racing seasons, as it compensates for the microscopic wear of the cylinder walls. When rebuilding TPI or carbureted models, always inspect your power valve for carbon buildup to ensure your powerband remains broad and predictable.\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\u003eBrand\u003c\/th\u003e\n            \u003cth\u003eModels\u003c\/th\u003e\n            \u003cth\u003eYear Range\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eKTM\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003e250 SX \/ XC \/ XC-W \/ EXC (Including TPI)\u003c\/td\u003e\n            \u003ctd\u003e2005-2023\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eHusqvarna\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003eTC250 \/ TE250 \/ TE250i\u003c\/td\u003e\n            \u003ctd\u003e2014-2023\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eGas Gas\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003eMC 250 \/ EX 250 \/ EC 250\u003c\/td\u003e\n            \u003ctd\u003e2021-2025\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eKTM\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003eFreeride 250 R\u003c\/td\u003e\n            \u003ctd\u003e2014-2018\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: What is the difference between Size A, B, and C?\u003c\/b\u003e\u003cbr\u003e\nA: Size C (66.36mm) is slightly larger than Size A or B. This allow you to maintain the factory-specified piston-to-wall clearance as the cylinder wall experiences natural wear over time, preventing piston slap and maintaining compression.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Does this kit work with TPI (Transfer Port Injection) models?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, this forged piston is fully compatible with both carbureted and TPI fuel-injected 250cc engines from KTM, Husqvarna, and Gas Gas.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Does this kit include the wrist pin bearing?\u003c\/b\u003e\u003cbr\u003e\nA: No, the kit includes the piston, rings, pin, and clips. We highly recommend purchasing a new small-end bearing separately whenever you perform a top-end refresh.\u003c\/p\u003e\n\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eTop End Gasket Kit:\u003c\/b\u003e Essential for a professional, leak-free engine rebuild.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMotorex Cross Power 2T Oil:\u003c\/b\u003e The recommended synthetic lubrication for high-performance European 2-strokes.\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 8169DC Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8169DC Forged 2-Stroke Piston Kit for KTM, Husqvarna, and Gas Gas 250cc models. Size C (66.36mm) for 66.42mm bores. 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