PISTON KIT 03-04 KTM250 66.40, WOSSNER 8082DB FORGED MX

This Wossner forged piston kit is designed for various 250cc two-stroke models from KTM, Gas-Gas, Husaberg, and Husqvarna. Featuring a +0.01 oversize with a 66.40mm bore and 66.35mm piston diameter, it offers high-strength construction and efficient thermal management for demanding engine conditions.

Features

• Forged piston construction ensures superior durability and resistance to wear

• Engineered for optimal heat transfer from combustion chamber to cylinder walls

• Elliptical design delivers consistent bearing surface during thermal expansion, minimising stress and preventing piston collapse

• Manufactured in Germany to high precision standards

Specifications

• Bore Size: 66.40 mm

• Piston Diameter: 66.35 mm

• Compression Height: 38.00 mm

• Stroke: 72.00 mm

• Clearance: 0.06 mm

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

• Displacement: 249 cm³

Cross-Reference OEM Part Numbers

• Wossner Piston Kit: 8082DB

• Alternate Piston Kit Reference: 56-W824.B.WO

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6640

• Rod: P2023

Vehicle Fitments

• KTM SX 250 2003–2004

• KTM EXC 250 2006–2018

• Gas-Gas EC 250 1997–2014

• Husaberg TE 250 2013–2014

• Husqvarna TC 250 2014–2018

• Husqvarna TE 250 2014–2018

• Husqvarna TE 250i 2018