Wossner 4075DA Piston Kit - 2023-2025 KTM 450 SX-F XC-F Husqvarna FC450 Gas Gas

Wossner 4075DA Premium Forged Piston Kit

When your high-revving 450cc engine requires a top-end refresh, the Wossner 4075DA Piston Kit is the definitive choice for restoring Factory Quality performance. Engineered for the latest generation of KTM, Husqvarna, and Gas Gas 4-stroke powerplants, this Premium Series kit is designed to handle the extreme cylinder pressures and heat of professional motocross and supermoto racing. At Moto-House MX, we provide the precision-forged components needed to maintain peak compression and reliable power delivery.

Forged from aerospace-grade aluminum alloy, this piston features a gas-ported two-ring design that utilizes combustion pressure to force the rings against the cylinder wall for a superior seal. The permanent skirt coating significantly reduces friction and piston rock, resulting in a quieter engine and improved mechanical efficiency. Designed for a high-performance 13.5:1 compression ratio, this kit ensures your bike retains its racing edge while providing the structural integrity required for long motos and technical trails.

Top Features: Wossner 4075DA Piston Kit

• Aerospace Forged Alloy: Superior strength and heat resistance for high-RPM reliability in 450cc engines.
• Gas Ported Design: Maximizes ring seal for increased compression and consistent horsepower output.
• Low-Friction Skirt Coating: Permanent coating reduces wear and engine noise for smoother operation.
• Precision Lightweight Machining: Maintains structural strength while reducing reciprocating mass for faster revs.
• Complete Kit: Includes everything needed for a rebuild: forged piston, rings, wrist pin, and clips.

Expert Pro-Tip: High-performance 450 engines rely on tight tolerances. When installing your new Wossner piston, always use a new top-end gasket kit and verify your valve clearances are within factory specifications to ensure a perfect rebuild and long-term durability.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2023-2025	KTM	450 SX-F / 450 XC-F / 450 SMR
2023-2025	Husqvarna	FC450 / FX450 / FS 450
2024-2025	Gas Gas	MC 450F / EX 450F

Frequently Asked Questions

Q: Is this a direct replacement for the stock piston?
A: Yes, this is a Standard Size A (94.95mm) piston designed to fit the stock 95.00mm bore perfectly.

Q: What are the benefits of gas ports?
A: Gas ports allow combustion pressure to reach the back of the top ring, forcing it outward for a much better seal against the cylinder wall than standard pistons, resulting in more consistent power.

Q: Will this fit my 2022 or older model?
A: No, this specific kit is engineered for the updated engine platform found in the 2023-2025 KTM/Husqvarna and 2024+ Gas Gas 450cc models.

Recommended Pairings

• Top End Gasket Kit: Essential for ensuring a leak-free seal during your engine rebuild.
• Motorex 4-Stroke Engine Oil: Premium synthetic protection for high-performance forged pistons.

Restore your bike's racing power today. Buy now at Moto-House MX!

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida. Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.