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Wossner Pistons

Wossner Impreza WRX STI Ver 1-4 9:1 Forged Piston & H-Beam Steel Con Rod Package (K9432/G0012)

Impreza WRX STI Ver 1-4 9:1 Forged Piston & H-Beam Steel Con Rod Package.

Manufacturer kit reference: K9432/G0012

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

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

Subaru EJ 2.0 2.2 & 2.5 Turbo 16v Engines H-Beam Connecting rods

Engine Code EJ20 & EJ25
Con Rod Length C/C 130.5mm
Con Rod Big End Dia 55mm
Con Rod Big End Width 21.425mm
Con Rod Small End Dia 23mm
Con Rod Small End Width 15.50mm T
Con Rod Bolt 3/8"

Kit contents

  • Impreza WRX STI Ver 1-4 9:1 Forged Piston Kit
  • Subaru EJ 2.0 2.2 & 2.5 Turbo 16v Engines H-Beam Connecting rods
  • ARP Bolt 3/8" Thread 1.5" UHL 2000 Series (4AJ1.500-2SU) × 8
  • ARP Assembly Lubricant (100-9908)

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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