{"product_id":"wossner-4090da-piston-kit-2023-2025-ktm-250-sx-f-xc-f-husqvarna-fc250-gas-gas","title":"Wossner 4090DA Piston Kit - 2023-2025 KTM 250 SX-F XC-F Husqvarna FC250 Gas Gas","description":"\u003ch3\u003eWossner 4090DA Premium Forged Piston Kit\u003c\/h3\u003e\n\u003cp\u003eWhen your high-revving 250cc engine needs a top-end refresh, the Wossner 4090DA Piston Kit is the ultimate choice for restoring Factory Quality performance. Engineered for the latest generation of KTM, Husqvarna, and Gas Gas 4-stroke powerplants, this kit is designed to handle the extreme demands of professional motocross and off-road racing. At Moto-House MX, we provide the precision-forged components needed to maintain peak compression and reliable power delivery.\u003c\/p\u003e\n\u003cp\u003eForged from aerospace-grade aluminum alloy, this Premium Series piston is optimized for extreme lightness without compromising structural strength. It features a gas-ported two-ring design that utilizes combustion pressure to push the rings against the cylinder wall for a superior seal. Designed for a high-performance 14.8:1 compression ratio, this kit ensures your bike retains its racing edge while providing the durability required for long motos and technical trails.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Wossner 4090DA Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAerospace Forged Alloy:\u003c\/b\u003e Superior strength-to-weight ratio for high-RPM reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGas Ported Design:\u003c\/b\u003e Maximizes ring seal for increased compression and consistent horsepower.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh Compression Performance:\u003c\/b\u003e Precision machined to support a racing-spec 14.8:1 compression ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFactory Quality Fitment:\u003c\/b\u003e Standard Size A (80.95mm) designed for a perfect fit in stock 81.00mm bores.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete Kit:\u003c\/b\u003e Includes everything needed for a rebuild: forged piston, high-performance rings, wrist pin, and clips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e High-compression 4-stroke engines require precise timing and clean fuel. When installing your new Wossner piston, always use a new top-end gasket kit and verify your valve clearances are within factory specifications.\u003c\/p\u003e\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\u003eFC 250 \/ 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\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: Is this piston a direct replacement for the stock part?\u003c\/b\u003e\u003cbr\u003eA: Yes, this is a Standard Size A (80.95mm) piston designed to fit the 81.00mm stock bore perfectly.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What are the benefits of a gas-ported piston?\u003c\/b\u003e\u003cbr\u003eA: Gas ports allow combustion pressure to get behind the top ring, forcing it against the cylinder wall for a better seal than standard pistons, resulting in more power.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Does this kit fit the older 2022 and earlier models?\u003c\/b\u003e\u003cbr\u003eA: No, this kit is specifically designed for the updated engine platform found in the 2023-2025 KTM\/Husqvarna and 2024+ Gas Gas 250cc models.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eTop End Gasket Kit:\u003c\/b\u003e Ensure a leak-free seal by replacing your gaskets during the piston installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMotorex 4-Stroke Engine Oil:\u003c\/b\u003e Protect your new forged piston with high-performance lubricants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRestore your bike's racing power today. Buy now at Moto-House MX!\u003c\/p\u003e\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\u003cp\u003e \u003c\/p\u003e","brand":"WOSSNER","offers":[{"title":"Default Title","offer_id":44496006086739,"sku":"4090DA","price":244.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/4668208.png?v=1776230657","url":"https:\/\/motohousemx.com\/products\/wossner-4090da-piston-kit-2023-2025-ktm-250-sx-f-xc-f-husqvarna-fc250-gas-gas","provider":"Moto-House MX","version":"1.0","type":"link"}