PISTON KIT 03-04 KTM250 66.40, WOSSNE 8082DA FORGED MX 55430007000

This Wossner forged piston kit is designed for a wide range of 250cc two-stroke models across KTM, Gas-Gas, Husaberg, and Husqvarna brands. With a bore size of 66.40mm and a piston diameter of 66.34mm, it provides reliable performance, efficient thermal management, and excellent structural integrity for standard bore engine configurations.

Features

• Forged construction delivers superior strength and durability

• Enhanced heat transfer from the combustion chamber to cylinder walls for improved thermal efficiency

• Elliptically designed piston distributes load uniformly, reducing localised pressure and minimising risk of piston collapse

• Manufactured in Germany for consistent precision and high quality

Specifications

• Bore Size: 66.40 mm

• Piston Diameter: 66.34 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: 8082DA

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

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6640

• Rod: P2023

• OEM Part Numbers: 55430007000, 824M06640

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