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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