Use Coupon Code BOOST5 at Checkout!

Due to high volume of orders, please inquire about inventory if it is not directly listed on the product.

Financing available for as low as 0%.

04-07 STI Air Induction

Aluminati 19mm Billet NA/JDM Manifold Spacers

Aluminati 19mm Billet NA/JDM Manifold Spacers $148.18

AMS EJ25 Intake Manifold Red - 2002-2014 WRX / 2004-2021 STI

AMS EJ25 Intake Manifold Red - 2002-2014 WRX / 2004-2021 STI $1,260.95

AMS EJ25 Intake Manifold Uncoated - 2002-2014 WRX / 2004-2021 STI

AMS EJ25 Intake Manifold Uncoated - 2002-2014 WRX / 2004-2021 STI $1,260.95

Boomba Racing 75mm DBW Throttle Body Bolt-on Servo Style Black - 04-19 STI

Boomba Racing 75mm DBW Throttle Body Bolt-on Servo Style Black - 04-19 STI $718.20 $798.00

Boomba Racing Bypass Valve - 04-20 STI $297.90 $331.00

ETS Intake Kit - 2004-2007 STI

ETS Intake Kit - 2004-2007 STI $295.00

Forced Performance 84mm Turbo Inlet - 02-07 WRX / 04+ STI

Forced Performance 84mm Turbo Inlet - 02-07 WRX / 04+ STI $199.00

Go Fast Bits Deceptor Pro II Electronically Adjustable Blow Off Valve - 02-14 WRX/STI

Go Fast Bits Deceptor Pro II Electronically Adjustable Blow Off Valve - 02-14 WRX/STI $396.90 $441.00

Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - 02-07 WRX / 04-21 STI

Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - 02-07 WRX / 04-21 STI $166.05 $184.50

Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - 04-14 STI / 02-07 WRX

Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - 04-14 STI / 02-07 WRX $166.05 $184.50

Go Fast Bits TMS Respons Hybrid Blow Off Valve - 04-21 STI / 02-07 WRX

Go Fast Bits TMS Respons Hybrid Blow Off Valve - 04-21 STI / 02-07 WRX $268.92 $298.80

GrimmSpeed Cold Air Intake Black - 2002-2007 WRX/STI / 2004-2008 FXT

GrimmSpeed Cold Air Intake Black - 2002-2007 WRX/STI / 2004-2008 FXT $349.00

GrimmSpeed Cold Air Intake Red - 2002-2007 WRX/STI / 2004-2008 FXT

GrimmSpeed Cold Air Intake Red - 2002-2007 WRX/STI / 2004-2008 FXT $349.00

GrimmSpeed Drive-by-Wire Throttle Body Gasket - 2004-2021 STI / 2006-2007 WRX

GrimmSpeed Drive-by-Wire Throttle Body Gasket - 2004-2021 STI / 2006-2007 WRX $9.00

GrimmSpeed TGV to Engine Gaskets

GrimmSpeed TGV to Engine Gaskets $13.00

GrimmSpeed Version 2 Bypass Valve Black - 2004-2021 STI / 2002-2007 WRX

GrimmSpeed Version 2 Bypass Valve Black - 2004-2021 STI / 2002-2007 WRX $249.00

GrimmSpeed Version 2 Bypass Valve Red - 2004-2021 STI / 2002-2007 WRX

GrimmSpeed Version 2 Bypass Valve Red - 2004-2021 STI / 2002-2007 WRX $249.00

HKS SQV IV Black Edition BOV Kit - Universal

HKS SQV IV Black Edition BOV Kit - Universal $250.75 $295.00

HKS Super SQV4 Blow Off Valve - 2002-2007 WRX/STI

HKS Super SQV4 Blow Off Valve - 2002-2007 WRX/STI $335.75 $395.00

HKS Super SQV4 Blow Off Valve - Universal

HKS Super SQV4 Blow Off Valve - Universal $250.75 $295.00

IAG Big Bore 76mm Throttle Body & Adapter for OEM STI / Cosworth Intake Manifolds

IAG Big Bore 76mm Throttle Body & Adapter for OEM STI / Cosworth Intake Manifolds $379.99

IAG Big Bore 76mm Throttle Body & Adapter Package for Subaru STI Process West Intake Manifolds

IAG Big Bore 76mm Throttle Body & Adapter Package for Subaru STI Process West Intake Manifolds $379.99

IAG Big Bore 76mm Throttle Body Adapter for OEM STI / Cosworth Intake Manifolds

IAG Big Bore 76mm Throttle Body Adapter for OEM STI / Cosworth Intake Manifolds $109.99

IAG Big Bore 76mm Throttle Body Adapter for Subaru STI Process West Intake Manifolds

IAG Big Bore 76mm Throttle Body Adapter for Subaru STI Process West Intake Manifolds $109.99

IAG Performance Bosch 82mm Throttle Body & Adapter Package - 2004-2021 STI w/ Process West Intake Manifolds

IAG Performance Bosch 82mm Throttle Body & Adapter Package - 2004-2021 STI w/ Process West Intake Manifolds $419.99

Injen IS Short RAM Intake System - 02-07 WRX/STI

Injen IS Short RAM Intake System - 02-07 WRX/STI $166.15 $184.61

Injen RD Cold Air Intake System - 02-07 WRX/STI

Injen RD Cold Air Intake System - 02-07 WRX/STI $253.97 $282.19

Injen SP Cold Air Intake System - 02-07 WRX/STI

Injen SP Cold Air Intake System - 02-07 WRX/STI $259.76 $288.62

Killer B Motorsport Extreme Flow Hard Turbo Inlet 3" Size - 04-21 STI / 02-07 WRX

Killer B Motorsport Extreme Flow Hard Turbo Inlet 3" Size - 04-21 STI / 02-07 WRX $339.00

Killer B Motorsport Extreme Flow Hard Turbo Inlet 84mm Size - 04-21 STI / 02-07 WRX

Killer B Motorsport Extreme Flow Hard Turbo Inlet 84mm Size - 04-21 STI / 02-07 WRX $339.00

Killer B Motorsport Extreme Flow Hard Turbo Inlet OEM Size - 04-21 STI / 02-07 WRX

Killer B Motorsport Extreme Flow Hard Turbo Inlet OEM Size - 04-21 STI / 02-07 WRX $339.00

Mishimoto Air Intake Box - 2002-2007 WRX/STI

Mishimoto Air Intake Box - 2002-2007 WRX/STI $152.95

Mishimoto Performance Intake - 2002-2007 WRX/STI

Mishimoto Performance Intake - 2002-2007 WRX/STI from $215.95 $368.90

Mishimoto Silicone Induction Hose - 2002-2007 WRX / 2004-2021 STI

Mishimoto Silicone Induction Hose - 2002-2007 WRX / 2004-2021 STI $234.95

Perrin Afta-MAF Intake Tube Black - 2002-2007 WRX/STI

Perrin Afta-MAF Intake Tube Black - 2002-2007 WRX/STI $77.60 $97.00

Perrin Afta-MAF Intake Tube Black - 2002-2007 WRX/STI

Perrin Afta-MAF Intake Tube Black - 2002-2007 WRX/STI $77.60 $97.00

Perrin Afta-MAF Intake Tube Red - 2002-2007 WRX/STI

Perrin Afta-MAF Intake Tube Red - 2002-2007 WRX/STI $77.60 $97.00

Perrin Afta-MAF Intake Tube Red - 2002-2007 WRX/STI

Perrin Afta-MAF Intake Tube Red - 2002-2007 WRX/STI $77.60 $97.00

Perrin Cold Air Intake System - 2002-2007 WRX/STI

Perrin Cold Air Intake System - 2002-2007 WRX/STI $366.40 $458.00

Perrin Panel Filter- 2002-2007 WRX/STI

Perrin Panel Filter- 2002-2007 WRX/STI $53.60 $67.00

Perrin Recirculating Blow Off Valve - 2002-2007 WRX / 2004-2021 STI $199.20 $249.00

Perrin Short Ram Intake System - 2002-2007 WRX/STI

Perrin Short Ram Intake System - 2002-2007 WRX/STI $225.60 $282.00

Perrin Short Ram Intake System - 2004-2007 STI

Perrin Short Ram Intake System - 2004-2007 STI $225.60 $282.00

Perrin Turbo Inlet Hose - 2002-2007 WRX / 2004-2021 STI

Perrin Turbo Inlet Hose - 2002-2007 WRX / 2004-2021 STI $266.40 $333.00

Perrin Turbo Inlet Hose 3.0" Turbos - 2002-2007 WRX / 2004-2021 STI

Perrin Turbo Inlet Hose 3.0" Turbos - 2002-2007 WRX / 2004-2021 STI $266.40 $333.00

Process West Intake Manifold Street Version - 04-20 STI

Process West Intake Manifold Street Version - 04-20 STI $1,935.00

Process West Intake Manifold Street Version Black - 04-20 STI

Process West Intake Manifold Street Version Black - 04-20 STI $1,999.00

Tial Q Blow Off Valve 8 PSI Spring Purple - Universal

Tial Q Blow Off Valve 8 PSI Spring Purple - Universal $259.99 $308.00

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