Subaru Impreza WRX GD Performance Parts & Upgrades

The Subaru Impreza WRX (GD sedan and GG wagon) was sold new in Australia from late 2000 to 2007, with a turbocharged boxer four and all-wheel drive. Early cars use the 2.0L EJ205 and the last models the 2.5L EJ255. Many parts are shared with the GD STI. This page lists the parts we stock for the GD WRX, from COBB, Perrin and GrimmSpeed intake, turbo and exhaust parts to HARDRACE bushes and mounts, Process West intercoolers, Torque Solution shifter bushings and Turbosmart and GFB blow off valves.

Shop by Vehicle
Popular upgrades for the GD WRX
  • Intake and turbo: COBB, Perrin and Process West intakes, turbo heat shields, boost solenoids, and GFB and Turbosmart blow off valves.
  • Intercooling and cooling: COBB and Process West front mount intercoolers, COBB CSF and KOYORAD radiators, and Mishimoto and Perrin oil coolers.
  • Exhaust: COBB and Borla cat-backs, a Borla header, KORSH downpipes, and COBB and GrimmSpeed up pipes.
  • Suspension and bushes: AST coilovers and springs, HARDRACE and Perrin bushings, end links and engine mounts, and Perrin and GrimmSpeed wheel spacers.
  • Driveline and shifter: COBB shifters, Torque Solution shifter bushings, and Drive Shaft Shop axles and driveshafts.
  • Engine: Cometic head gaskets, Supertech and GSC valvetrain, Manley rods and ACL bearings.
Choosing the Right Part
  • Front end style: the GD was facelifted twice, for 2003 and 2006. Process West intercoolers come in Bugeye, Blobeye and Hawkeye versions.
  • EJ20 or EJ25: 2.0L and 2.5L cars need different head gaskets, pistons and some turbo parts. Check your engine before ordering.
  • WRX or STI: the STI has a 6-speed gearbox and different brakes. Driveline and shifter parts are often listed for one model only.
  • Sedan or wagon: most parts fit both, but check the title for springs and exhausts.
Installation

Have a qualified workshop fit suspension, brake, fuel and engine parts. Get a wheel alignment after any suspension change, and bleed and road-test the brakes after brake work. Fuel and engine upgrades usually need a tune to suit, so ask us if you're unsure.

Need help choosing? Contact our team at sales@chicaneaustralia.com.au.

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Frenkit 40mm aluminium caliper piston, Porsche 944 – photo coming soon placeholder
GSC Power-Division Billet S3 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 282/282 GSC Power-Division Billet S3 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 282/282 - Image 2
GSC Power-Division Billet S2 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 272/272 GSC Power-Division Billet S2 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 272/272 - Image 2
GSC Power-Division Billet S1 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 268/266 GSC Power-Division Billet S1 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 268/266 - Image 2
GSC Power-Division Billet S3 Camshafts - Subaru EJ205 (WRX 2002-2005) - 280/280
GSC Power-Division Billet S2 Camshafts - Subaru EJ205 (WRX 2002-2005) - 272/272
GSC Power-Division Billet S1 Camshafts - Subaru EJ205 (WRX 2002-2005) - 270/266
GSC Power-Division Super Alloy Exhaust Valve - Subaru EJ20/EJ257 Turbo - 33mm Head (+1mm) GSC Power-Division Super Alloy Exhaust Valve - Subaru EJ20/EJ257 Turbo - 33mm Head (+1mm) - Image 2
GSC Power-Division Exhaust Valve - Subaru EJ205/EJ207/EJ257 - 32mm Head (STD) - Chrome Polished
GrimmSpeed Antenna Delete Plate - Subaru Impreza / WRX (GDA/GGA) / STI (GDB) GrimmSpeed Antenna Delete Plate - Subaru Impreza / WRX (GDA/GGA) / STI (GDB) - Image 2
GrimmSpeed BroTie Mounting Bracket for Hella Horns - Subaru WRX/STI (GD/GR/VA) GrimmSpeed BroTie Mounting Bracket for Hella Horns - Subaru WRX/STI (GD/GR/VA) - Image 2
GrimmSpeed High-Lift Hood Struts - Subaru Impreza/WRX (GDA/GGA) / STI (GDB) GrimmSpeed High-Lift Hood Struts - Subaru Impreza/WRX (GDA/GGA) / STI (GDB) - Image 2
GrimmSpeed Turbo to Downpipe Gasket - WRX (GDA/GGA/GE8/GH8) / STI (GDB/GRF/VAB) GrimmSpeed Turbo to Downpipe Gasket - WRX (GDA/GGA/GE8/GH8) / STI (GDB/GRF/VAB) - Image 2
GrimmSpeed Turbo Heat Shield - Subaru EJ20/EJ25 GrimmSpeed Turbo Heat Shield - Subaru EJ20/EJ25 - Image 2
Sale priceFrom $175.00
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GrimmSpeed License Plate Relocation Kit - Subaru WRX/STI (GDA/GGA/GDB) - Image 2 GrimmSpeed License Plate Relocation Kit - Subaru WRX/STI (GDA/GGA/GDB) - Image 3
GrimmSpeed Radiator Shroud w/ Tool Tray - Subaru WRX (GDA/GGA) / STI (GDB) - Image 2 GrimmSpeed Radiator Shroud w/ Tool Tray - Subaru WRX (GDA/GGA) / STI (GDB) - Image 3
GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX/STI (GDA/GGA/GDB) MY06-07 GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX/STI (GDA/GGA/GDB) MY06-07 - Image 2
GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX (GDA/GGA) MY04-05 - Image 2 GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX (GDA/GGA) MY04-05 - Image 3
GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX (GDA/GGA) MY02-03 GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX (GDA/GGA) MY02-03 - Image 3
GrimmSpeed Version 2 Bypass Valve - Subaru WRX (GDA/GGA) / STI (GDB/GRF/GVF/VAB) - Image 2 GrimmSpeed Version 2 Bypass Valve - Subaru WRX (GDA/GGA) / STI (GDB/GRF/GVF/VAB) - Image 3
GrimmSpeed Radiator Hose Kit - Subaru WRX (GDA/GGA) MY02-07 / STI (GDB) MY04-07 - Image 3 GrimmSpeed Radiator Hose Kit - Subaru WRX (GDA/GGA) MY02-07 / STI (GDB) MY04-07 - Image 4
GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX (GDA/GGA) MY02-03 - Image 2 GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX (GDA/GGA) MY02-03 - Image 3
GrimmSpeed 2-Bolt Up-Pipe - Subaru STI (GDB/GRF/GVF/VAB) / WRX (GDA/GGA/GE8/GH8) GrimmSpeed 2-Bolt Up-Pipe - Subaru STI (GDB/GRF/GVF/VAB) / WRX (GDA/GGA/GE8/GH8) - Image 2
GrimmSpeed Exhaust Manifold to Crosspipe Gasket (Pair) - Subaru STI (GC8/GDB) - Image 2
GrimmSpeed Short Throw Shifter - Subaru STI (GDB/GRF/GVF/VAB) - 6-Speed - Image 2 GrimmSpeed Short Throw Shifter - Subaru STI (GDB/GRF/GVF/VAB) - 6-Speed - Image 3
GrimmSpeed 3mm Wheel Spacer Pair - Subaru WRX/STI (GDA/GDB/VAG/VAB/VBH) GrimmSpeed 3mm Wheel Spacer Pair - Subaru WRX/STI (GDA/GDB/VAG/VAB/VBH) - Image 2