{"product_id":"wossner-8169da-piston-kit-ktm-250-sx-xc-husqvarna-tc-te-gas-gas-250","title":"Wossner 8169DA Piston Kit - KTM 250 SX\/XC Husqvarna TC\/TE Gas Gas 250","description":"\u003ch3\u003eWossner 8169DA Premium Forged 2-Stroke Piston Kit - Standard Size A\u003c\/h3\u003e\n\n\u003cp\u003eMaintain the race-winning edge of your European 2-stroke with the Wossner 8169DA Piston Kit. Engineered specifically for the KTM, Husqvarna, and Gas Gas 250cc engine platforms, this Standard Size A 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 handle the high-revving demands of modern 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. Optimized machining ensures a lightweight design that doesn't compromise strength in key areas like the crown and skirt walls, providing the durability needed for both intense motocross and technical off-road riding.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8169DA Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eStandard Size A (66.34mm Piston):\u003c\/b\u003e Precision-engineered for the standard 66.40mm bore to maintain perfect factory tolerances.\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 When rebuilding modern KTM\/Husqvarna\/Gas Gas 250 engines, particularly TPI models, always ensure your power valve is cleaned and timed correctly. Using a new top-end gasket kit is essential for a leak-free seal. For TPI owners, this refresh is a great time to inspect your crankcase pressure sensor and oil pump performance to ensure long-term reliability.\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: Is this a Standard Size piston?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, this is the 66.34mm Piston designed for the standard 66.40mm bore. If your cylinder plating is worn beyond service limits, you may need to consider a Size B or a re-plate.\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 8169DA Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8169DA Forged 2-Stroke Piston Kit for KTM, Husqvarna, and Gas Gas 250cc models. Standard Size A (66.34mm) for 66.40mm bore. 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