Subaru Impreza WRX STI GC Performance Parts & Upgrades

The Subaru Impreza WRX STI (GC) was sold new in Australia from 1998 to 2000, powered by the 2.0L EJ20 turbo flat-four with all-wheel drive. Earlier Japanese Versions, the Type R coupe, Type RA and the GF wagon also reached Australia as imports. It shares its body and most suspension with the GC WRX. This page lists the parts we stock, including HARDRACE bushings and arms, GrimmSpeed and Got It Rex parts, Process West intercoolers, GSC Power-Division, Manley and ACL engine parts, DSS driveshafts and axles, and GFB and Turbosmart valves.

Shop by Vehicle
Popular upgrades for the GC STI
  • 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.
Choosing the Right Part
  • 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.
Installation

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.

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

203 products
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HARDRACE TPV Steering Bush Kit - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) HARDRACE TPV Steering Bush Kit - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Image 2
HARDRACE
HARDRACE TPV Steering Bush KitSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG)

SKU: 6152

$80.00
Out of Stock at Supplier
SOLD OUT
HARDRACE Front/Rear - Reinforced Stabiliser Bushing - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - 20mm HARDRACE Front/Rear - Reinforced Stabiliser Bushing - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - 20mm - Image 2
HARDRACE
HARDRACE Front/RearReinforced Stabiliser Bushing – Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) – 20mm

SKU: 6151

$47.00
In Stock at Supplier
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HARDRACE Trailing Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Pillow Ball HARDRACE Trailing Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Pillow Ball - Image 2
HARDRACE
HARDRACE Trailing Arm BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Pillow Ball

SKU: 6149

$240.00
In Stock at Supplier
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HARDRACE Lateral Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber
HARDRACE
HARDRACE Lateral Arm BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 6148

$306.00
In Stock at Supplier
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HARDRACE Rear Trailing Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber
HARDRACE
HARDRACE Rear Trailing Arm BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 6147

$154.00
Only 1 at Supplier
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HARDRACE Rear Arm Hardened Bushings - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber
HARDRACE
HARDRACE Rear Arm Hardened BushingsSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 6145

$460.00
In Stock at Supplier
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HARDRACE Front Control Arm Bushing-Small - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Hardened Rubber HARDRACE Front Control Arm Bushing-Small - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Front Control Arm Bushing-SmallSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) – Hardened Rubber

SKU: 6144

$115.00
Only 3 at Supplier
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HARDRACE Front Lower Arm Bushing-Big - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber HARDRACE Front Lower Arm Bushing-Big - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Front Lower Arm Bushing-BigSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 6143

$229.00
In Stock at Supplier
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HARDRACE Transmission Mount 5 Speed - Subaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)
HARDRACE
HARDRACE Transmission Mount 5 SpeedSubaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)

SKU: 5835-T

$196.00
In Stock at Supplier
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HARDRACE Hardened Engine Pitch - Subaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)
HARDRACE
HARDRACE Hardened Engine PitchSubaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)

SKU: 5835-P

$248.00
In Stock at Supplier
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HARDRACE Hardened Engine Mounts - Subaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)
HARDRACE
HARDRACE Hardened Engine MountsSubaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)

SKU: 5835-A

$267.00
In Stock at Supplier
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HARDRACE Hardened Engine Mounts 5 Speed - Subaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)
HARDRACE
HARDRACE Hardened Engine Mounts 5 SpeedSubaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR)

SKU: 5835

$497.00
In Stock at Supplier
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HARDRACE Rear Sway Bar - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) - 22mm HARDRACE Rear Sway Bar - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) - 22mm - Image 2
HARDRACE
HARDRACE Rear Sway BarSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) – 22mm

SKU: Q1109

$355.00
In Stock at Supplier
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HARDRACE Front Sway Bar - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) - 22mm HARDRACE Front Sway Bar - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) - 22mm - Image 2
HARDRACE
HARDRACE Front Sway BarSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) – 22mm

SKU: Q1108

$355.00
In Stock at Supplier
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HARDRACE Brake Master Cylinder Stopper - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Black HARDRACE Brake Master Cylinder Stopper - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Black - Image 2
HARDRACE
HARDRACE Brake Master Cylinder StopperSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) – Black

SKU: Q0729-ED

$141.00
In Stock at Supplier
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HARDRACE Brake Master Cylinder Stopper - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) HARDRACE Brake Master Cylinder Stopper - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Image 3
HARDRACE
HARDRACE Brake Master Cylinder StopperSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF)

SKU: Q0729

$141.00
In Stock at Supplier
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HARDRACE Extended Wheel Stud - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) / WRX (VB/VN) HARDRACE Extended Wheel Stud - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) / WRX (VB/VN) - Image 2
HARDRACE
HARDRACE Extended Wheel StudSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) / WRX (VB/VN)

SKU: 7618

$189.00
In Stock at Supplier
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HARDRACE Rear Lateral Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber HARDRACE Rear Lateral Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Rear Lateral Arm BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 7241

$154.00
In Stock at Supplier
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HARDRACE Rear Front Lateral Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber HARDRACE Rear Front Lateral Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Rear Front Lateral Arm BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 7240

$154.00
Out of Stock at Supplier
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HARDRACE Rear Differential To Subframe Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber HARDRACE Rear Differential To Subframe Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Rear Differential To Subframe BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 6955

$229.00
In Stock at Supplier
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HARDRACE Rear Cross Member Bushing - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Hardened Rubber HARDRACE Rear Cross Member Bushing - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Rear Cross Member BushingSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF) – Hardened Rubber

SKU: 6789

$192.00
Only 3 at Supplier
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HARDRACE Rear Diff Support Member Bushing - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF/SG) - Hardened Rubber HARDRACE Rear Diff Support Member Bushing - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF/SG) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Rear Diff Support Member BushingSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM) / Forester (SF/SG) – Hardened Rubber

SKU: 6599

$154.00
Out of Stock at Supplier
SOLD OUT
HARDRACE Rear Upper Support Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber HARDRACE Rear Upper Support Arm Bushing - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Hardened Rubber - Image 2
HARDRACE
HARDRACE Rear Upper Support Arm BushingSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Hardened Rubber

SKU: 6598

$154.00
Only 3 at Supplier
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HARDRACE Hardened Strut Mount - Subaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM)
HARDRACE
HARDRACE Hardened Strut MountSubaru Impreza WRX (GC/GF/GM) / Impreza WRX STI (GC/GF/GM)

SKU: 6496

$267.00
Out of Stock at Supplier
SOLD OUT
HARDRACE Hardened Strut Mount - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG)
HARDRACE
HARDRACE Hardened Strut MountSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG)

SKU: 6495

$267.00
Only 2 at Supplier
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HARDRACE Shifter Bushings - Subaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR) - 5 MT Use Only HARDRACE Shifter Bushings - Subaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR) - 5 MT Use Only - Image 2
HARDRACE
HARDRACE Shifter BushingsSubaru Impreza WRX (GC/GF/GM/GD/GG/GE-GR) / Impreza WRX STI (GC/GF/GM/GD/GG/GE-GR) – 5 MT Use Only

SKU: 6349-A

$54.00
In Stock at Supplier
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HARDRACE Rear Reinforced Stabiliser Link with Bracket - Subaru Impreza WRX STI (GC/GF/GM/GD/GG) / Forester (SF/SG) / Liberty (BD/BG/BK)
HARDRACE
HARDRACE Rear Reinforced Stabiliser Link with BracketSubaru Impreza WRX STI (GC/GF/GM/GD/GG) / Forester (SF/SG) / Liberty (BD/BG/BK)

SKU: 6315

$298.00
In Stock at Supplier
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HARDRACE Front Control Arm Bush - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Pillow Ball HARDRACE Front Control Arm Bush - Subaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) - Pillow Ball - Image 2
HARDRACE
HARDRACE Front Control Arm BushSubaru Impreza WRX (GC/GF/GM/GD/GG) / Impreza WRX STI (GC/GF/GM/GD/GG) – Pillow Ball

SKU: 6313

$552.00
Only 2 at Supplier
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