This Wossner forged piston kit features an 88.01mm bore size (87.96mm actual), providing a +0.01mm oversize fitment for KTM and Husaberg 350cc models. Designed and manufactured in Germany, the piston includes an elliptical profile to promote even load distribution and reduce localised stress during thermal expansion. It maintains OEM compression specifications and supports reliable performance under demanding conditions.

Features

• Forged piston with precision +0.01mm oversize specification

• Elliptical design ensures uniform pressure distribution during thermal expansion

• Engineered for optimal heat dissipation and structural integrity

• Manufactured in Germany

Specifications

• Bore Size: 88.01mm (actual 87.96mm)

• 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

• Theoretical Weight: Not specified

• Lock Part Number: CW18

• Pin Part Number: WP054

• Ring Set Part Number: 880XSY

• Rod Part Number: P4061

Cross-Reference OEM Part Numbers

• 56-W960.B.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)