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: 90mm


• Actual Bore: 89.95mm


• Display (cm³): 229


• Stroke (mm): 53.60


• Clearance (mm): 0.05


• Wossner Compression Ratio: OEM


• OEM Compression Ratio: 13.20:1


• Dome Volume (cm³): +1.30


• Compression Height (mm): 20.50


• Theoretical Weight: N/A


• Lock Part Number: CW18


• Pin Part Number: WP053


• Ring Set Part Number: 900XSY

Rod Part Numbers:

• P4040 (2010-2012)


• P4061 (2013-2015)


• P4069 (2016)


• Part Number: 56-W4735+200.WO

Vehicle Fitments

• KTM SX-F 350 2011-2015