Subaru Impreza WRX STI GC Performance Parts & Upgrades

• Subaru Impreza WRX (GC): same body and suspension
• Subaru Impreza WRX STI (GD)
• Subaru Impreza WRX STI (GR)
• Subaru Impreza WRX STI (GV)
• Subaru WRX STI (VA)
• Subaru Impreza WRX (GD)
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• Suspension: HARDRACE bushings, sway bars, camber arms, control arms, trailing arms and engine mounts, plus AST coilovers.
• Engine: GSC Power-Division and Supertech valves, guides and springs, Manley rods, King and ACL bearings, Nitto parts and ARP fasteners.
• Turbo and intake: Process West intercoolers, GFB and Turbosmart blow-off valves and wastegates, and GrimmSpeed turbo heat shields.
• Drivetrain: DSS carbon driveshafts and axle kits, and GFB short throw shifters.
• Brakes and cooling: Alcon, Brembo and Paragon big brake kits, Frenkit caliper rebuild kits, and Got It Rex radiator hoses, tanks and cooling plates.

• STI or WRX: most suspension parts fit both, but the STI has different brakes and an R180 rear diff on some models, so drivetrain and brake parts can differ.
• Model year: some parts are split by year, such as MY99-00 blow-off valves and inlets. Check the years in the title.
• Body style: the sedan, Type R coupe and GF wagon share most parts, but rear suspension and body parts can differ.
• Older car checks: most GC STIs are over 25 years old and many have mixed parts from previous owners. Check bushes, mounts and what is already fitted.

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