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

This Wossner piston kit with a 78.01mm bore (+0.01mm oversize, actual size 77.95mm) is engineered for KTM 380 models—EGS, EXC, and SX—from 1998 to 2002. Forged in Germany, it ensures high strength, efficient heat dissipation, and long-term reliability in high-performance two-stroke applications.

Features

• Forged piston for superior mechanical strength and durability

• Designed to optimise heat transfer from combustion chamber to cylinder walls

• Elliptical design provides a consistent bearing surface, reducing localised stress and preventing piston collapse

• Manufactured in Germany for precision and quality assurance

Specifications

• Bore size: 78.01 mm

• Actual piston size: 77.95 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# 8223DB

• Lock: PN# CA18

• Pin: PN# WP039

• Ring Set: PN# RSC7800