Wossner forged piston kit designed for high-performance applications, offering superior strength and optimized heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for precision and durability.

Features

• Forged piston for enhanced strength and durability
• Optimized heat transfer to cylinder walls for improved performance
• Elliptical design for even thrust load distribution
• Manufactured in Germany

Specifications

• Bore Size: 91mm
• Actual Bore: 90.94mm
• Display (cm³): 398
• Stroke (mm): 64.00
• Clearance (mm): 0.06
• Wossner Compression Ratio: OEM
• OEM Compression Ratio: 11.00:1
• Dome Volume (cm³): +7.00
• Compression Height (mm): 27.50
• Theoretical Weight: N/A
• Lock Part Number: CW20
• Pin Part Number: WP038
• Ring Set Part Number: 910XSY
• Part Number: 56-W4733+200.WO

Vehicle Fitments

• KTM LC4 400 1998-2001