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This Wossner forged piston kit features a 77mm bore size (76.96mm actual) and is a standard replacement for Kawasaki KX250F models from 2011 to 2014. Manufactured in Germany, the piston is designed with a two-ring configuration and an elliptical shape that promotes even load distribution under thermal expansion. It ensures effective heat transfer and long-term durability in high-performance environments.
Features
Forged piston construction with two-ring design for durability and strength
Elliptical profile ensures even thrust load distribution during operation
Engineered for efficient heat transfer from combustion chamber to cylinder walls
Manufactured in Germany
Specifications
Bore Size: 77mm (actual 76.96mm)
Displacement: 249 cm³
Stroke: 53.60 mm
Clearance: 0.04 mm
Compression Ratio (Wossner): OEM
Compression Ratio (OEM): 13.50:1
Dome Volume: -2.80 cm³
Compression Height: 19.60 mm
Lock Part Number: CW16
Pin Part Number: WP070
Ring Set Part Number: 770XAS-2
Cross-Reference OEM Part Numbers
13001-0125
40019M07700
Vehicle Fitments
2011 Kawasaki KX250F
2012 Kawasaki KX250F
2013 Kawasaki KX250F
2014 Kawasaki KX250F