PISTON KIT KTM 175GS 64.50, WOSSNER 8292D100 KTM GS 77-82

This Wossner forged piston kit features a 64.50mm bore size (64.44mm actual) and serves as a +1.00mm oversize replacement for KTM 175 GS and MC models from 1977 to 1982. Designed for two-stroke engines, it offers advanced heat transfer and structural integrity under high-performance demands. The piston’s elliptical shape ensures optimal load distribution during expansion, reducing stress concentrations and enhancing reliability.

Features

• Forged for high strength and thermal performance in two-stroke applications

• Elliptical design promotes uniform load distribution under heat expansion

• Precision-machined in Germany for consistent performance and durability

Specifications

• Bore Size: 64.50mm (actual 64.44mm)

• Stroke: 54.00 mm

• Clearance: 0.06 mm

• Compression Ratio (Wossner): 2-stroke

• Compression Ratio (OEM): 12-stroke

• Dome Volume: Not specified

• Compression Height: 37.00 mm

• Lock Part Number: CW15

• Pin Part Number: WP011

• Ring Set Part Number: RSB6450

Cross-Reference OEM Part Numbers

• 56-W967.100.WO

Vehicle Fitments

• KTM 175 GS (1977–1982)

• KTM 175 MC (1977–1982)