This Wossner forged piston kit features an 88.02mm bore size (87.97mm actual), offering a +0.02mm oversize fitment for a variety of KTM, Husaberg, and Husqvarna 350cc models. Made in Germany, the piston includes a two-ring design and an elliptical profile to ensure even load distribution during thermal expansion. Designed for reliability and performance, it maintains OEM compression specifications and is built to endure high-stress operation.

Features

• Forged piston with +0.02mm oversize specification

• Elliptical design promotes uniform pressure distribution under heat expansion

• Engineered for effective combustion heat transfer and long-term durability

• Manufactured in Germany

Specifications

• Bore Size: 88.02mm (actual 87.97mm)

• Displacement: 349 cm³

• Stroke: 57.50 mm

• Clearance: 0.05 mm

• Compression Ratio (Wossner): OEM

• Compression Ratio (OEM): 12.30:1

• Dome Volume: -0.10 cm³

• Compression Height: 20.50 mm

• Lock Part Number: CW18

• Pin Part Number: WP054

• Ring Set Part Number: 880XSY

• Rod Part Number: P4061

Cross-Reference OEM Part Numbers

• 56-W960.C.WO

Vehicle Fitments

• KTM 350 EXC-F (2012–2015)

• KTM 350 XC-F (2012–2015)

• KTM 350 XCF-W (2012–2015)

• KTM Freeride 350 (2012–2014)

• Husaberg FE350 (2013–2014)

• Husqvarna FE350 (2014)