{"product_id":"wossner-4077da-piston-kit-2023-2025-ktm-250-sx-f-xc-f-husqvarna-fc250-gas-gas","title":"Wossner 4077DA Piston Kit - 2023-2025 KTM 250 SX-F XC-F Husqvarna FC250 Gas Gas","description":"\u003ch3\u003eWossner 4077DA Premium Forged Piston Kit\u003c\/h3\u003e\n\n\u003cp\u003eWhen your high-performance 250cc engine requires a top-end refresh, the Wossner 4077DA Piston Kit is the professional choice for restoring Factory Quality throttle response and power. Engineered for the latest generation of KTM, Husqvarna, and Gas Gas 4-stroke platforms, this kit is designed to handle the high-revving demands of both motocross and technical off-road racing. At Moto-House MX, we provide the precision-forged components required to keep your machine at the front of the pack.\u003c\/p\u003e\n\n\u003cp\u003eForged from aerospace-grade aluminum alloy, this Premium Series piston features a gas-ported two-ring design for an exceptional combustion seal. The permanent skirt coating significantly reduces friction and piston rock, resulting in a quieter engine and improved mechanical efficiency. Designed with a 12.75:1 compression ratio, this kit balances high-performance output with the rugged durability needed for long motos and aggressive trail riding.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 4077DA Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eAerospace Forged Alloy:\u003c\/b\u003e Superior strength and heat resistance for high-RPM reliability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eGas Ported Design:\u003c\/b\u003e Enhances ring seal using combustion pressure for maximum power output and consistent compression.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent coating reduces wear and engine noise for smoother operation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePrecision Lightweight Machining:\u003c\/b\u003e Maintains structural integrity while reducing reciprocating mass for faster revs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Kit:\u003c\/b\u003e Includes everything needed for a rebuild: forged piston, rings, wrist pin, and clips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e The modern 250cc 4-stroke engine relies on tight tolerances for its performance. When installing your new Wossner piston, always verify your valve clearances and use a new top-end gasket kit to ensure a perfect seal and 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\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\u003e2023-2025\u003c\/td\u003e\n\u003ctd\u003eKTM\u003c\/td\u003e\n\u003ctd\u003e250 SX-F \/ 250 XC-F\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e2023-2025\u003c\/td\u003e\n\u003ctd\u003eHusqvarna\u003c\/td\u003e\n\u003ctd\u003eFC250 \/ FE 250 \/ FC 250 Rockstar Ed.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e2024-2025\u003c\/td\u003e\n\u003ctd\u003eGas Gas\u003c\/td\u003e\n\u003ctd\u003eMC 250F \/ EX 250F \/ EC 250F\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 A piston?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, this is the 80.95mm piston designed for the standard 81.00mm bore size used in KTM\/Husqvarna\/Gas Gas 250cc engines.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: What are the benefits of gas ports?\u003c\/b\u003e\u003cbr\u003e\nA: Gas ports allow combustion pressure to reach the back of the rings, forcing them against the cylinder wall for a superior seal and more consistent power throughout the RPM range.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Will this fit my 2022 or older model?\u003c\/b\u003e\u003cbr\u003e\nA: No, this specific kit is engineered for the updated engine platform found in the 2023-2025 KTM\/Husqvarna and 2024+ Gas Gas 250cc models.\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 leak-free seal during your engine rebuild.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMotorex 4-Stroke Engine Oil:\u003c\/b\u003e The ultimate protection for high-performance forged pistons.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eRestore your bike's racing power 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 4077DA Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 4077DA Forged Piston Kit for 2023-2025 KTM, Husqvarna, and Gas Gas 250cc models. 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