Subaru Impreza WRX STI (GR) 2008–2014 Performance Parts & Upgrades

The Subaru Impreza WRX STI hatch (GR) was sold new in Australia from 2008 to 2014, with the 2.5L EJ257 turbo flat-four and all-wheel drive. It shares its platform with the GV STI sedan and the GH WRX, so many parts fit all three. This page lists the parts we stock for the GR STI, from the COBB Accessport, intakes and intercoolers, KORSH and COBB exhausts and Perrin and GrimmSpeed parts to HARDRACE suspension, Paragon, Alcon and Brembo brakes and GSC Power-Division and Manley engine parts.

Shop by Vehicle
Popular upgrades for the GR STI
  • Tuning and intake: the COBB Accessport V3 (Australian spec), COBB MAP and flex fuel sensors, and COBB, Perrin, Process West and aFe intakes.
  • Turbo and exhaust: COBB, Perrin and Process West intercoolers, Turbosmart and GFB blow-off valves, and KORSH, COBB, Borla, REMARK and Tomei exhausts.
  • Suspension: HARDRACE and COBB sway bars, end links, toe arms and bushings, plus Perrin and COBB driveline and transmission mount bushings.
  • Shifters: COBB drivetrain packages and GFB, Perrin and GrimmSpeed short shifters and bushings.
  • Brakes: Paragon, Alcon, Brembo and AP Racing big brake kits and Frenkit caliper rebuild kits.
  • Engine and fuel: GSC Power-Division and Supertech valvetrain, Manley rods and pistons, and COBB and Radium fuel rails and lines.
Choosing the Right Part
  • Hatch or sedan: the GR hatch and GV sedan share most parts, but aero and some exhaust parts differ. Check the chassis code in the title.
  • STI or WRX: the STI has a different engine and gearbox to the GH WRX, so engine, turbo and driveline parts may not swap between them.
  • Model year: some aero parts are made for 2008-2010 or 2011-2014 cars only. Check the years in the title.
Installation

Have a qualified workshop fit suspension, brake, engine and driveline parts. Get a wheel alignment after any suspension change, and bleed and road-test the brakes after brake work. Intake, exhaust, fuel and boost upgrades need a tune.

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

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COBB rear differential pinion crossmember mount bushing kit – bushings, sleeves and grease
COBB rear differential to subframe mount insert – two inserts, washers and grease
COBB HD adjustable rear sway bar end links – pair of links with bolts, washers and bushings COBB HD adjustable rear sway bar end links – link with COBB logo and bushing eye
COBB rear differential to subframe mount bushing kit – pair of bushings and grease sachet
COBB titanium cat-back exhaust – Subaru WRX STI hatch – full system, four tips and clamps laid out COBB titanium cat-back exhaust – Subaru WRX STI hatch – titanium mid pipe section
COBB adjustable rear toe arm and lower control arm package – arms, toe arms and hardware laid out COBB adjustable rear toe arm and lower control arm package – rear lower control arm, side view
COBB rear sway bar mount reinforcement kit – pair of braces with bolts and washers
COBB front control arm inner bushing kit – pair of bushings with spacers and washers COBB front control arm inner bushing kit – bushing face with COBB logo
COBB front control arm inner bushing kit – pair of bushings with spacers and washers COBB front control arm inner bushing kit – bushing face with COBB logo
COBB brushed titanium exhaust tip kit – single brushed tip with COBB logo COBB brushed titanium exhaust tip kit – four brushed tips
COBB blued titanium exhaust tip kit – single blued tip with COBB logo COBB blued titanium exhaust tip kit – four tips and slip-joint clamps
Cometic MLX head gasket for Subaru EJ255/EJ257 2007–2018, 101mm bore (product illustration)
Borla Cat-Back Exhaust - Subaru WRX / WRX STI (GR / GV) - 3in Quad Exit Borla Cat-Back Exhaust - Subaru WRX / WRX STI (GR / GV) - 3in Quad Exit - Image 2
Turbosmart Billet Oil Cap M42x4.5 - Subaru WRX (GC8/GD/GE/GH) / WRX STI (GC8/GD/GR/GV/VA) Turbosmart Billet Oil Cap M42x4.5 - Subaru WRX (GC8/GD/GE/GH) / WRX STI (GC8/GD/GR/GV/VA) - Image 2
Turbosmart FPR Fuel Rail Adaptor - Subaru WRX STI (GR/GV)
Turbosmart Kompact Plumb Back Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV/VA) / Forester XT (SG)
Turbosmart Kompact Dual Port Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV/VA) / Forester XT (SG)
Turbosmart BOV Subaru Flange Gasket - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG)
Turbosmart BOV Flange Adapter Kit - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG)
Turbosmart BOV5 Vee Port Pro Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) Turbosmart BOV5 Vee Port Pro Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) - Image 2
Turbosmart BOV5 PlumBack Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) Turbosmart BOV5 PlumBack Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) - Image 2
Turbosmart BOV5 Supersonic Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) Turbosmart BOV5 Supersonic Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) - Image 2
Turbosmart BOV5 Dual Port Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) Turbosmart BOV5 Dual Port Blow Off Valve - Subaru WRX (GD/GG) / WRX STI (GD/GR/GV) / Forester XT (SG) - Image 2
Turbosmart IWG75 Wastegate Actuator - Subaru WRX STI (GD/GR/GV/VA) / WRX (GE/GH) - 7psi Turbosmart IWG75 Wastegate Actuator - Subaru WRX STI (GD/GR/GV/VA) / WRX (GE/GH) - 7psi - Image 2
COBB lightweight main pulley – Subaru EJ – black billet pulley, front view COBB lightweight main pulley – Subaru EJ – front view, second copy (product illustration)
COBB SF airbox hardware kit – hex key, flange bolts, small bolts, flange nut and black nylon washers
COBB 3-port boost control solenoid hardware kit – six cable ties, hex bolt and washer
COBB TGV shaft seal kit – Subaru EJ – two plates, bolts, O-rings and lube COBB TGV shaft seal plate – Subaru EJ – both sides with laser-etched logo