This Wossner 78mm bore forged piston kit (part number 8905DA, standard size) is specifically designed for Sherco SE2.5i-F 4-stroke engines. Featuring a high-strength forged construction and optimised thermal transfer design, it ensures consistent performance and longevity. The elliptical shape provides uniform load distribution, reducing the risk of piston collapse under high temperatures. Manufactured in Germany, this kit meets the demands of performance and durability.

Features

• Forged piston designed for maximum strength and reliability

• Engineered for efficient heat transfer from the combustion chamber

• Elliptical design ensures even thrust load distribution

• Made in Germany

Specifications

• Bore: 78mm

• Bore Size: 77.94mm

• Compression Ratio: OEM

• OEM Compression Ratio: 13.20:1

• Compression Height: 18.40mm

• Clearance: 0.06mm

• Stroke: 52.2mm

• Displacement: 250cm³

• Dome Volume: +3.60cm³

• Clip Part Number: CW16

• Piston Pin: WP070

• Ring Set: 780XAS-2

Cross-Reference OEM Part Numbers

• 56-W9879.A.WO

Vehicle Fitments

• Sherco SE2.5i-F (2008–2012)