Wossner / Spool Forged Stroker Kit (EJ20/EJ21) - Subaru Impreza WRX/STI GD# / GG# 2002-2007

Subaru Impreza WRX/STI GD# / GG# 2002-2007

Stroker EJ20:
Piston Kit: Wossner Forged Piston Kit EJ20/EJ21 
K9050DA (92mm) (9.00)  / K9050D050 (92.5mm) (9.09) / K9050D100 (93mm) (9.17) - STI GDB (Ver 7-8) (CR OEM: 8.1) 
K9223DA (92mm)(CR:8.00) / K9223D050 (92.5mm) (8.08) / K9223D100 (93mm) (8.15) - STI GDB (Ver 9) (CR OEM: 8.0)

Connecting Rod: Spool Import H-Beam Subaru EJ20 Conrods, ARP2000 3/8 Bolt  SP-EJ20-HB

ACL Main Bearing: 5M8309H (Thrust #5) / 5M8297H (Thrust #3)

ACL Con Bearing: 4B8296H (52mm Journal Series)

Nitrided Crankshaft: 
Subaru OEM - 12200AA390 (EJ20) (NP)

Stroker EJ21:
Piston Kit: Wossner Forged Piston Kit EJ20/EJ21 
K9050DA (92mm) (9.00)  / K9050D050 (92.5mm) (9.09) / K9050D100 (93mm) (9.17) - STI GDB (Ver 7-8) (CR OEM: 8.1) 
K9223DA (92mm)(CR:8.00) / K9223D050 (92.5mm) (8.08) / K9223D100 (93mm) (8.15) - STI GDB (Ver 9) (CR OEM: 8.0)

Connecting Rod: Spool Import H-Beam Subaru EJ20 Conrods, ARP2000 3/8 Bolt  

ACL Main Bearing: 5M8309H

ACL Con Bearing

Crankshaft: 
Subaru OEM Nitride (EJ25) 79mm