This Wossner forged high-compression piston kit features a 95.02mm bore size (94.97mm actual), offering a +0.02mm oversize fitment for KTM SX-F450 models from 2013 to 2018. Made in Germany, the piston includes a high-compression dome and an elliptical design to ensure even thrust load distribution and improved durability. It is built to enhance performance while maintaining reliability under high thermal and mechanical stress.

Features

• Forged high-compression piston with precision +0.02mm oversize specification

• Elliptical design for uniform load distribution under thermal expansion

• Designed for efficient heat transfer and increased compression performance

• Manufactured in Germany

Specifications

• Bore Size: 95.02mm (actual 94.97mm)

• Displacement: 449 cm³

• Stroke: 84.00 mm

• Clearance: 0.05 mm

• Compression Ratio (Wossner): 13.60:1

• Compression Ratio (OEM): 12.60:1

• Dome Volume: +4.10 cm³

• Compression Height: 22.80 mm

Cross-Reference OEM Part Numbers

• 56-W956.C.WO.HC

Vehicle Fitments

• KTM SX-F450 (2013–2018)