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Wossner Pistons

Wossner Impreza WRX STI Ver 1-4 9:1 Forged Piston Kit (K9432)

Impreza WRX STI Ver 1-4 9:1 Forged Piston Kit.

Manufacturer kit reference: K9432

Technical specifications

Engine Code EJ20
YOM From 1992
YOM To 1998
Bore Size 92.5mm – K9432D050 , 92mm – K9432DA , 93mm – K9432D100
Stroke 75mm
Compression Height 33.4mm
OEM Comp Ratio 8.3:1
Number of Rings 3
OEM Rod Length 130.5mm
Clip Part Number CA23
Pin Size 23mm
Pin Part Number WP143-SP
Cylinders 4
Valves Per Cylinder 4
Suits Wossner Con Rod G0012
Con Rod Length C/C 130.5mm

Piston specifications by size

Piston reference Piston diameter Compression ratio Capacity
K9432D050 92.43mm 9.09:1 2015cc
K9432D100 92.93mm 9.17:1 2037cc
K9432DA 91.93mm 9:1 1993cc

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

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