PISTON KIT 13-16 SXF250 78mm B, WOSSNER 8874DB HC KTM

This Wossner forged high-compression piston kit features a 78.01mm bore size (77.97mm actual), providing a +0.01mm oversize option for KTM SX-F250 models from 2013 to 2015. Manufactured in Germany with a two-ring design and elliptical profile, the piston ensures balanced thrust load distribution and optimal thermal performance. It includes a high-compression dome and is built for demanding engine conditions.

Features

• Forged high-compression piston with two-ring configuration

• Elliptical design ensures even pressure distribution under heat expansion

• Designed for efficient combustion heat transfer to cylinder walls

• Manufactured in Germany

Specifications

• Bore Size: 78.01mm (actual 77.97mm)

• Displacement: 249 cm³

• Stroke: 52.30 mm

• Clearance: 0.04 mm

• Compression Ratio (Wossner): 14.50:1

• Compression Ratio (OEM): 13.90:1

• Dome Volume: -1.20 cm³

• Compression Height: 19.50 mm

• Lock Part Number: CW16

• Pin Part Number: WP070

• Ring Set Part Number: RIK78.00

Cross-Reference OEM Part Numbers

• 56-W955.B.WO.HC

Vehicle Fitments

• 2013 KTM SX-F250

• 2014 KTM SX-F250

• 2015 KTM SX-F250