This Wossner forged piston kit features a 63.50mm bore size (63.95mm actual) and is a standard fitment for KTM 175 GS and MC models from 1977 to 1982. Manufactured in Germany, the piston is designed for two-stroke engines, providing enhanced durability and thermal efficiency. Its elliptical profile ensures even load distribution, reducing the risk of piston collapse under expansion.

Features

• Forged piston designed for two-stroke performance applications

• Elliptical shape ensures even thrust load distribution under thermal stress

• Engineered for efficient heat transfer from combustion chamber to cylinder walls

• Manufactured in Germany

Specifications

• Bore Size: 63.50mm (actual 63.95mm)

• Stroke: 54.00 mm

• Clearance: 0.06 mm

• Compression Ratio (Wossner): 2-stroke

• Compression Ratio (OEM): 12-stroke (as listed)

• Compression Height: 37.00 mm

• Lock Part Number: CW15

• Pin Part Number: WP011

• Ring Set Part Number: RSB6350

Cross-Reference OEM Part Numbers

• 56-W967.00A.WO

Vehicle Fitments

• KTM 175 GS (1977–1982)

• KTM 175 MC (1977–1982)