This Wossner forged high-compression piston kit features a 77mm bore size (76.96mm actual) and is designed for the 2010 Kawasaki KX250F. Manufactured in Germany, it includes a two-ring configuration and a high-compression dome for increased performance. The elliptical design ensures consistent load distribution, while efficient heat transfer supports durability under high-stress conditions.

Features

• Forged high-compression piston with two-ring design

• Elliptical profile ensures even thrust load distribution under heat expansion

• Designed for optimal combustion heat transfer to cylinder walls

• Manufactured in Germany

Specifications

• Bore Size: 77mm (actual 76.96mm)

• Displacement: 250 cm³

• Stroke: 53.60 mm

• Clearance: 0.04 mm

• Compression Ratio (Wossner): 13.90:1

• Compression Ratio (OEM): 13.20:1

• Dome Volume: -1.40 cm³

• Compression Height: 19.60 mm

• Lock Part Number: CW16

• Pin Part Number: WP070

• Ring Set Part Number: 770XAS

Cross-Reference OEM Part Numbers

• OEM: 13001-0115

• Wiseco: 40009M

• Vertex: 23566

• ProX: 01.4340

• Wiseco: 40010M07700

Vehicle Fitments

• 2010 Kawasaki KX250F