Wossner WO-4077-DA Forged Piston Kit KTM, Husqvarna and GasGas 250

Wossner WO-4077-DA Premium Series Forged Piston Kit for KTM, Husqvarna & GasGas 250 Four-Stroke – 81.00 mm

The Wossner WO-4077-DA Forged Piston Kit is a Premium Series forged piston designed for selected KTM, Husqvarna and GasGas 250cc four-stroke motocross and cross-country motorcycles. Manufactured from premium 2618 forged aluminium using Wossner's Double Bridge Forging process, it features a gas-ported, two-ring design for maximum strength, reduced friction and outstanding reliability in high-performance applications.

Featuring an 81.00 mm standard cylinder bore, 80.95 mm finished piston diameter, 48.50 mm stroke compatibility, 19.50 mm compression height and a 14.4:1 compression ratio, the WO-4077-DA is supplied complete with piston rings, DLC-coated wrist pin and retaining clips for a premium top-end rebuild. :contentReference[oaicite:0]{index=0}

• Premium Series forged piston kit
• Suitable for KTM 250 SX-F 2023–2027
• Suitable for KTM 250 XC-F 2023–2027
• Suitable for Husqvarna FC 250 2023–2026
• Suitable for Husqvarna FE 250 2024–2026
• Suitable for GasGas MC 250F 2024–2025
• Suitable for GasGas EX 250F 2024–2025
• 81.00 mm standard cylinder bore
• 80.95 mm finished piston diameter
• 48.50 mm stroke compatibility
• 19.50 mm compression height
• 14.4:1 Wossner compression ratio
• Double Bridge Forging construction
• Gas-ported piston design
• Two-ring piston configuration
• RIK81.00A/2 piston ring set
• WP070-SP DLC wrist pin
• CW16 retaining clips
• Includes piston, piston rings, wrist pin and retaining clips

Important: Always confirm your motorcycle make, model, year and measured cylinder bore before ordering. Graded pistons should be selected according to the measured cylinder size to achieve the correct piston-to-cylinder clearance.

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.