The Wossner WO-4100-DC Forged Piston Kit is a Grade C forged piston designed for selected KTM 500 EXC-F, Husqvarna FE 501 and GASGAS EC 500F models. Manufactured in Germany from premium forged aluminium, it delivers maximum strength, durability and performance for demanding enduro and off-road applications.

Featuring a 94.96mm piston diameter and a 13.5:1 Wossner compression ratio, the WO-4100-DC is intended for cylinders requiring the Grade C piston size while maintaining the correct piston-to-cylinder clearance.

Suitable for KTM 500 EXC-F 2020–2025
Suitable for Husqvarna FE 501 2020–2025
Suitable for GASGAS EC 500F 2024–2025
94.96mm piston diameter (Grade C)
13.5:1 Wossner compression ratio
Premium forged aluminium construction
Precision CNC machined
Includes piston, piston rings, wrist pin and retaining clips
Manufactured in Germany by Wossner

Important: Always confirm the motorcycle make, model, year and measured cylinder bore before ordering. This Grade C piston must be selected according to the measured cylinder diameter. Professional engine assembly is recommended.

Notice: Product images may differ from the actual product. Images are provided for illustration purposes only and may show a representative item rather than the exact part supplied.