Wossner forged piston kit designed for superior strength and performance in 2-stroke engines. Engineered for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.

Features

• Forged construction for enhanced durability


• Optimized heat transfer for improved performance


• Elliptical design prevents localized pressure and piston collapse


• Single-ring configuration for reduced friction and improved performance

Specifications

• Bore: 55.95 mm


• Piston Size: 56.00 mm


• Displacement: 144 cm³


• Stroke: 58.50 mm


• Clearance: 0.05 mm


• Wossner Compression Ratio: 2-stroke


• OEM Compression Ratio: 2-stroke


• Compression Height: 29.50 mm

Cross-Reference OEM Part Numbers

• Lock: CW15


• Pin: WP032


• Ring Set: RSB5600


• Rod: P2012


• OEM Part Numbers: 51530007400, 09104887, 869M05600

Vehicle Fitments

• KTM SX 144 (2007-2008)


• KTM SX 150 (2009-2014)