PISTON KIT 98-02 KTM380 78.00, WOSSNER 8223DC FORGED

This Wossner piston kit with a 78.02mm bore (+0.02mm oversize, actual size 77.96mm) is engineered for KTM 380 models—EGS, EXC, and SX—from 1998 to 2002. Manufactured in Germany, the forged piston ensures robust performance, efficient heat dissipation, and reliable fit for high-output two-stroke engines.

Features

• Forged piston construction provides superior strength and extended durability

• Designed to optimise heat transfer from the combustion chamber to the cylinder wall

• Elliptical shape ensures even load distribution and reduces the risk of piston collapse during thermal expansion

• Manufactured in Germany with precision for consistent quality and performance

Specifications

• Bore size: 78.02 mm

• Actual piston size: 77.96 mm

• Display (cm³): 368

• Stroke (mm): 77.00

• Clearance (mm): 0.06

• Compression ratio: 2-stroke (Wossner and OEM)

• Compression height (mm): 27.00

Vehicle Fitments

• 1998–2002 KTM EGS 380

• 1998–2002 KTM EXC 380

• 1998–2002 KTM SX 380

Included Components

• Piston: Wossner PN# 8223DC

• Lock: PN# CA18

• Pin: PN# WP039

• Ring Set: PN# RSC7800