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

Features

• Forged piston for enhanced strength and durability


• Optimized heat transfer to cylinder walls for improved performance


• Elliptical design for uniform bearing surface and even thrust load distribution


• Manufactured in Germany

Specifications

• Bore Size: 76mm


• Actual Bore: 75.96mm


• Display (cm³): 527


• Stroke (mm): 54.80


• Clearance (mm): 0.04


• Wossner Compression Ratio: 12.90:1


• OEM Compression Ratio: 12.80:1


• Dome Volume (cm³): 1.20


• Compression Height (mm): 19.50


• Theoretical Weight: N/A


• Lock Part Number: CW16


• Pin Part Number: WP070


• Ring Set Part Number: 760XAS


• Part Number: 56-W4730+00A.WO

Cross-Reference OEM Part Numbers

• 77130007100


• 4981M07600

Vehicle Fitments

• KTM EXC250 Racing 2006-2013


• KTM SX-F250 2006-2012


• Husaberg FE250 2013