PISTON KIT 13-16 SXF250 78mm C, WOSSNER 8874DC HC KTM

This Wossner forged high-compression piston kit features a 78.02mm bore size (77.98mm actual), providing a +0.02mm oversize fitment for KTM SX-F250 models from 2013 to 2015. Engineered in Germany with a two-ring design, the piston incorporates an elliptical profile to ensure even load distribution and superior heat transfer. The high-compression dome enhances combustion efficiency for demanding performance conditions.

Features

• Forged high-compression piston with two-ring configuration

• Elliptical design ensures uniform pressure distribution during heat expansion

• Optimised for efficient combustion heat transfer to cylinder walls

• Manufactured in Germany

Specifications

• Bore Size: 78.02mm (actual 77.98mm)

• Displacement: 249 cm³

• Stroke: 60.80 mm

• Clearance: 0.05 mm

• Compression Ratio (Wossner): OEM

• Compression Ratio (OEM): 12.60:1

• Dome Volume: +1.00 cm³

• Compression Height: 22.80 mm

• Lock Part Number: CW16

• Pin Part Number: WP070

• Ring Set Part Number: RIK78.00

Cross-Reference OEM Part Numbers

• 56-W955.C.WO.HC

Vehicle Fitments

• 2013 KTM SX-F250

• 2014 KTM SX-F250

• 2015 KTM SX-F250