PISTON KIT 00-05 KTM250 66.40, WOSSNER 8081DA 2-RING 54630207100

This Wossner piston kit with a 66.40mm bore (actual size 66.34mm) is designed for KTM MXC 250 and EXC 250 models from 2000 to 2005. Forged in Germany, this high-performance piston offers exceptional strength, heat transfer capability, and reliability in two-stroke engine applications.

Features

• Forged piston for superior mechanical strength and durability

• Engineered to provide optimal heat transfer from combustion chamber to cylinder wall

• Elliptical design promotes uniform load distribution and prevents piston collapse under thermal stress

• Manufactured in Germany with precision engineering

Specifications

• Bore size: 66.40 mm

• Actual piston size: 66.34 mm

• Display (cm³): 249

• Stroke (mm): 72.00

• Clearance (mm): 0.06

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

• Compression height (mm): 38.00

Cross-Reference OEM Part Numbers

• 54630207100

• 09104804

• 857M06640

Vehicle Fitments

• 2000–2005 KTM EXC 250

• 2000–2005 KTM MXC 250

Included Components

• Piston: Wossner PN# 8081DA

• Lock: PN# CW18

• Pin: PN# WP033

• Ring Set: PN# RSB6640 x 2

• Rod: PN# P2023