PISTON KIT 98-02 KTM380 79.00, WOSSNER 8223D100 FORGED

This Wossner piston kit with a 79.00mm bore (+1.00mm oversize, actual size 78.94mm) is designed for KTM 380 models—EGS, EXC, and SX—from 1998 to 2002. Forged in Germany, it is built for strength, consistent thermal transfer, and long-term reliability in high-performance two-stroke engines.

Features

• High-strength forged piston construction for maximum durability

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

• Elliptical design provides a uniform bearing surface, reducing localised pressure and preventing piston collapse

• Manufactured in Germany with precision engineering for reliable performance

Specifications

• Bore size: 79.00 mm

• Actual piston size: 78.94 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# 8223D100

• Lock: PN# CW18

• Pin: PN# WP039

• Ring Set: PN# RSC7900