Engine

Forged piston set manufactured by Omega Pistons for the EJ20 engine. Supplied in 92.00mm standard bore plus 92.25mm and 92.50mm oversize. Listed for GC/GF-chassis Subaru Impreza (1992-2000).

Arrow Precision billet crankshaft, 79mm, sold under the RCM/Arrow name for Subaru applications, reverse engineered from the OEM design. Please contact Scooby Upgrades to confirm compatibility with your vehicle before ordering.

RCM alloy/steel vernier camshaft pulley set for adjusting exhaust cam timing on 2001-2007 Subaru STI (V7-V9) engines. Anodised black alloy outer with a stainless steel inner hub, laser-etched timing markings and a one-piece belt guide. Supplied with ARP high-strength bolts.

RCM alloy/steel vernier camshaft pulley set, listed for Subaru Impreza GC8/GF8 (1999-2001). Anodised black alloy outer with a stainless steel inner hub, laser-etched timing markings and a one-piece belt guide. Supplied with ARP high-strength bolts. Please confirm exact model fitment before ordering.

RCM alloy/steel vernier camshaft pulley set for Subaru Impreza 1996-1998 (V3-V4). Anodised red alloy outer with a stainless steel inner hub, laser-etched timing markings and a one-piece belt guide. Supplied with ARP high-strength bolts.

An oil catch tank for right-hand drive Subaru Impreza GC8/GF8 (1992–2000), supplied as the tank only, for use with your own breather lines and fittings. Please contact Scooby Upgrades to confirm compatibility with your vehicle before ordering.

A Track Attack oil catch tank kit for right-hand drive Subaru Impreza EJ20 applications (1992–2007). Vents crankcase and cylinder head vapours into a separate tank, with a supplied drain hose returning separated oil to the sump. Please contact Scooby Upgrades to confirm compatibility with your vehicle before ordering.

An oil catch tank kit for right-hand drive Subaru Impreza GDA/GDB single-scroll models (2001–2005). Vents crankcase and cylinder head vapours into a separate tank, with a supplied drain hose returning separated oil to the sump.

High-compression forged piston set manufactured by Omega Pistons for the EJ20 engine, adding 10cc of compression volume. Supplied in 92.00mm standard bore plus 92.25mm and 92.50mm oversize.

High-compression forged piston set manufactured by Omega Pistons for the EJ20 engine, adding 5cc of compression volume. Supplied in 92.00mm standard bore plus 92.25mm and 92.50mm oversize.