Wossner WO-4091-DA Forged Piston Kit KTM 350 SX-F, KTM 350 XC-F, Husqvarna FC350 and Husqvarna FX350

Wossner WO-4091-DA KTM 350 SX-F/XC-F & Husqvarna FC350/FX350 Forged Piston Kit – 14.6:1 Compression

The Wossner WO-4091-DA Forged Piston Kit is engineered for selected KTM 350 SX-F, KTM 350 XC-F, Husqvarna FC350 and Husqvarna FX350 four-stroke motorcycles. Manufactured from premium forged aluminium alloy, this Standard Series piston delivers excellent strength, stability and durability for demanding motocross and cross-country applications.

Featuring an 88.00 mm standard cylinder bore, 87.95 mm piston diameter, 57.50 mm stroke compatibility and a 14.6:1 compression ratio, the WO-4091-DA provides precise fitment and dependable high-performance operation. Its two-ring design and lateral gas ports support effective cylinder sealing, while the permanent skirt coating helps reduce friction, piston rock and wear.

• Standard Series forged aluminium piston kit
• Suitable for KTM 350 SX-F 2023–2027
• Suitable for KTM 350 XC-F 2023–2027
• Suitable for Husqvarna FC350 2023–2026
• Suitable for Husqvarna FX350 2023–2026
• 88.00 mm standard cylinder bore
• 87.95 mm piston diameter
• 57.50 mm stroke compatibility
• 14.6:1 compression ratio
• Two-ring piston design
• Lateral gas ports
• Permanent anti-friction skirt coating
• TPR88.00/2 piston ring set
• WP072-SP wrist pin
• CW18 retaining clips
• Includes piston, rings, wrist pin and retaining clips

Important: Always confirm the motorcycle make, model, year and measured cylinder bore before ordering. The cylinder must be accurately measured and the correct graded piston selected to achieve the specified piston-to-cylinder clearance. 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.