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Wossner Pistons

Wossner Civic B16A 9:1 Comp Forged Piston Kit (K9425)

Civic B16A 9:1 Comp Forged Piston Kit.

Manufacturer kit reference: K9425

Technical specifications

Engine Code B16A
YOM From 1989
YOM To 2001
Bore Size 81.5mm – K9425D050 , 81mm – K9425D400 , 82.5mm – K9425D150 , 82mm – K9425D100 , 83mm – K9425D200 , 84.5mm – K9425D350 , 84mm – K9425D300 , 85mm – K9425D400
Stroke 77.4mm
Compression Height 29.85mm
OEM Comp Ratio 10.2:1
Number of Rings 3
OEM Rod Length 134.4mm
Clip Part Number CW21
Pin Size 21mm
Pin Part Number WP139-SP
Cylinders 4
Valves Per Cylinder 4

Piston specifications by size

Piston reference Piston diameter Compression ratio Capacity
K9425D100 81.93mm 9:1 1634cc
K9425D050 81.43mm 9:1 1614cc
K9425D150 82.43mm 9:1 1654cc
K9425D200 82.93mm 9:1 1674cc
K9425D300 83.93mm 9:1 1715cc
K9425D350 84.43mm 9:1 1735cc
K9425D400 84.93mm 9:1 1756cc
K9425DA 80.93mm 9:1 1595cc

Piston diameter and cylinder bore are different measurements. Select the correct size and confirm the engine specification before ordering.

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