The Wossner 8941DB piston kit is a forged performance upgrade featuring a 88.00mm standard bore with a measured diameter of 87.96mm, offering a +0.01mm sizing option. It is precision-engineered for KTM and Husqvarna 350cc models and provides exceptional strength, uniform expansion, and efficient thermal conductivity. Made in Germany, the piston design enhances durability under thermal load conditions.

Features

• Forged construction for increased strength and reliability

• Engineered for effective combustion heat transfer to cylinder walls

• Elliptical shape ensures uniform bearing surface during thermal expansion

• Minimises localised stress and prevents piston collapse

• Includes piston, rings (880XSY), pin (WP054), and circlips (CW18)

Specifications

• Bore: 88.00mm (STD)

• Diameter: 87.96mm

• Sizing: B (+0.01mm)

• Compression Ratio: 12.5:1

• Wossner Part Number: 8941DB

• Kit Part Number: 56-W9950.B.WO

• Made in Germany

Cross-Reference OEM Part Numbers

• RINGS: 880XSY

• PIN: WP054

• CLIPS: CW18

Vehicle Fitments

• KTM 350 EXC-F 2017 - 2018

• Husqvarna FE350 2017 - 2018