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2015-2021 WRX & STI Mods

COBB Tuning Can Flex Fuel Upgrade 2018-2021 WRX

$1,035.00
$1,035.00 - $1,035.00
$1,035.00
$1,035.00 - $1,035.00

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

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GrimmSpeed Black Post-MAF Hose Kit 2015-2021 WRX

$182.00
$182.00 - $182.00
$182.00
$182.00 - $182.00

DESCRIPTION This is the GrimmSpeed Post MAF Hose Kit. This hose kit has been designed to replace the OEM hose to increase the flow to improve the o...

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Perrin Hyper Pink Fender Shrouds 2015-2021 WRX / 2015-2021 STI

$120.00
$120.00 - $120.00
$120.00
$160.00
$160.00 - $160.00
$160.00

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...

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Perrin Hyper Pink Oil Cap 2002+ WRX / 2004-2021 STI

$66.00
$66.00 - $66.00
$66.00
$88.00
$88.00 - $88.00
$88.00

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

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COBB Tuning Redline Carbon Fiber Engine Cover 2015-2021 WRX

$325.00
$325.00 - $325.00
$325.00
$325.00 - $325.00

The COBB Redline Carbon Fiber Engine bay for the 2015+ Subaru WRX is constructed of solid carbon fiber featuring a 2x2 twill weave pattern. It is...

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Perrin Red Cam Solenoid Cover 2015+ WRX

$134.25
$134.25 - $134.25
$134.25
$179.00
$179.00 - $179.00
$179.00

Conceal the ugly OEM covers with the PERRIN Cam Solenoid Covers. Made from CNC machined aluminum and anodized black, blue, neon yellow, or red to ...

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Perrin Black Cam Solenoid Cover 2015+ WRX

$134.25
$134.25 - $134.25
$134.25
$179.00
$179.00 - $179.00
$179.00

Conceal the ugly OEM covers with the PERRIN Cam Solenoid Covers. Made from CNC machined aluminum and anodized black, blue, neon yellow, or red to ...

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Perrin Black Charge Pipe 2015-2021 WRX

$288.75
$288.75 - $288.75
$288.75
$385.00
$385.00 - $385.00
$385.00

Replace the restrictive OEM plastic charge pipe to increase horsepower and boost response with the PERRIN Charge Pipe for 2015-2021 WRX!  NO TUNIN...

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Perrin Red Cold Air Intake 2015-2021 WRX

$352.50
$352.50 - $352.50
$352.50
$470.00
$470.00 - $470.00
$470.00

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucia...

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Perrin Oil Cooler Kit 2002-2014 WRX / 2004-2021 STI

$418.50 - $780.00
$418.50 - $780.00
$418.50
$558.00 - $1,040.00
$558.00 - $1,040.00
$558.00

WHY YOU WANT THIS In racing conditions engine oil temperature skyrockets. This causes decreased engine performance and reduces the oil's ability to...

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Subaru OEM Short Block 2015-2021 WRX

$2,714.30
$2,714.30 - $2,714.30
$2,714.30
$2,714.30 - $2,714.30

Introducing the Subaru OEM 2.0L FA20DIT Short Block. This is a fully assembled short block that includes all the main guts such as the factory pist...

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Perrin Front Mount Intercooler Kit 2015-2021 WRX

$2,009.25 - $2,091.75
$2,009.25 - $2,091.75
$2,009.25
$2,679.00 - $2,789.00
$2,679.00 - $2,789.00
$2,679.00

Intercooler Construction The Perrin Intercooler Core is 28" long x 9.25" tall x 3.5" deep with a volume of 906.5 cu-in. which gives the Perrin Int...

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Perrin Neon Yellow Air Oil Separator 2015-2021 WRX

$499.80
$499.80 - $499.80
$499.80
$588.00
$588.00 - $588.00
$588.00

Not a Catch Can The Perrin Air Oil Separator is not a catch can. Catch cans capture engine blow-by and stores it in a container, which requires co...

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AEM Cold Air Intake Silver 2015-2021 WRX

$369.99
$369.99 - $369.99
$369.99
$369.99 - $369.99

AEM Cold Air Intake Systems are designed to produce horsepower and torque gains. They replace the restrictive factory airbox and air filter to give...

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TurboXS Front Mount Intercooler Kit Polished 2015-2021 WRX

$1,504.94
$1,504.94 - $1,504.94
$1,504.94
$1,956.42
$1,956.42 - $1,956.42
$1,956.42

The TurboXS 2015+ Subaru WRX Front Mount Intercooler Kit might be the single best modification you can do to your 2015-2016 WRX.  One of the bigges...

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AMS Performance Front Mount Intercooler Bumper Beam 2015-2021 WRX

$484.95
$484.95 - $484.95
$484.95
$484.95 - $484.95
$484.95

This is the AMS Performance Front Mount Intercooler Bumper Beam, which is an optional add-on for the AMS Front Mount Intercooler Kit. The Bumper Be...

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AMS Performance Front Mount Intercooler 2015-2021 WRX

$874.95
$874.95 - $874.95
$874.95
$874.95 - $874.95
$874.95

Whether you live in a hot climate region, enjoy drag racing, or long high speed pulls on airstrips the 2015-2021 Subaru WRX Front Mount Intercooler...

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COBB Tuning BPV Adapter for FMIC 2002-2007 WRX / 2004-2021 STI

$85.00
$85.00 - $85.00
$85.00
$85.00 - $85.00

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

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COBB Tuning Fuel Rails 2008-2021 STI

$300.00
$300.00 - $300.00
$300.00
$300.00 - $300.00

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

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COBB Tuning Black Front Mount Intercooler Kit 2015-2021 STI

$2,435.00
$2,435.00 - $2,435.00
$2,435.00
$2,435.00 - $2,435.00

DESCRIPTION Remove the overworked factory intercooler from your 2015+ STI in favor of the Black COBB Front Mount Intercooler Kit. Featuring a ...

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COBB Tuning Airbox 2015-2018 STI

$260.00
$260.00 - $260.00
$260.00
$260.00 - $260.00

EMISSIONS 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...

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COBB Tuning Redline Carbon Fiber Intake 2015-2021 STI

$875.00
$875.00 - $875.00
$875.00
$875.00 - $875.00

DESCRIPTION The Redline Carbon Fiber Intake seamlessly blends performance and aesthetics to bring the ultimate intake for your 2015-2021 WRX...

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COBB Tuning Radiator Shroud 2015-2021 WRX/STI

$125.00
$125.00 - $125.00
$125.00
$125.00 - $125.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION This radiator s...

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COBB Tuning Black Front Mount Intercooler Core 2015-2021 WRX/STI

$1,150.00
$1,150.00 - $1,150.00
$1,150.00
$1,150.00 - $1,150.00

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

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Perrin Hyper Pink Radiator Shroud 2015-2021 WRX / 2015-2021 STI

$105.00 - $161.25
$105.00 - $161.25
$105.00
$140.00 - $215.00
$140.00 - $215.00
$140.00

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

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Perrin EBCS Pro Boost Control Solenoid 2008-2021 STI

$149.25
$149.25 - $149.25
$149.25
$199.00
$199.00 - $199.00
$199.00

The PERRIN Electronic Boost Control Solenoid (EBCS) Pro is designed to control today's high performance turbochargers with its ultra-fast response ...

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Perrin Pink Strut Tower Brace 2015-2021 WRX / STI

$249.75
$249.75 - $249.75
$249.75
$333.00
$333.00 - $333.00
$333.00

Performance During cornering, the Perrin Strut Tower Brace improves chassis rigidity, enhances steering precision under high load conditions, and r...

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Process West Black Intake Manifold Track Version 2002-2014 WRX / 2004-2021 STI

$2,333.00
$2,333.00 - $2,333.00
$2,333.00
$2,333.00 - $2,333.00

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

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AMS Performance Intake Manifold 2004-2021 STI

$1,499.95
$1,499.95 - $1,499.95
$1,499.95
$1,499.95 - $1,499.95

Stay Ahead Of Your Competition With The AMS Subaru WRX / STI Intake Manifold! The AMS Subaru Intake Manifold was designed to outperform the competi...

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Perrin Black Cold Air Intake 2018-2021 STI

$236.25
$236.25 - $236.25
$236.25
$315.00
$315.00 - $315.00
$315.00

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

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Injector Dynamics 2600-XDS Fuel Injectors 2002-2014 WRX/ 2007-2021 STI

$1,593.90
$1,593.90 - $1,593.90
$1,593.90
$1,593.90 - $1,593.90

DESCRIPTION The Injector Dynamics ID2600-XDS fuel injectors are a top-feed, high-flow injector set built for extreme fuel demand—big turbo, high bo...

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Blouch Dominator 2.5XT-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

$2,117.50 - $2,217.50
$2,117.50 - $2,217.50
$2,117.50
$2,117.50 - $2,217.50

DESCRIPTION The Blouch Dominator 2.5XT-R Ball Bearing Turbocharger is a stock-location upgrade for WRX/STI owners who want a turbo that hit...

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Perrin Black Intercooler Core 2015-2021 WRX / 2015-2021 STI

$833.25
$833.25 - $833.25
$833.25
$1,111.00
$1,111.00 - $1,111.00
$1,111.00

Replacement Intercooler and Bumper Beam for the PERRIN Front Mount Intercooler Kits!

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Cusco Drive Shaft Heat Shield (Rear Left Side) 2015-2021 STI

$72.00
$72.00 - $72.00
$72.00
$80.00
$80.00 - $80.00
$80.00

Steel * Bolt on installation * Only for 6 Speed MT Protect Inner joint grease from high heat from muffler front pipe.

AEM Cold Air Intake 2019-2021 STI

$369.99
$369.99 - $369.99
$369.99
$369.99 - $369.99

SPECS: Tuned and dyno-tested to improve acceleration and engine sound Low restriction aluminum intake pipe Intake pipe will come powder-coated a w...

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Forced Performance Red Turbocharger 2002-2007 WRX / 2004-2021 STI

$1,499.00 - $1,899.00
$1,499.00 - $1,899.00
$1,499.00
$1,499.00 - $1,899.00

Oil supply line and gasket set included! FP Red Compressor wheel - HTZ 79 Flow rating - 65LB per minute CW Measurements - 57.3MM Inducer / 79MM Ex...

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If you own a Subaru WRX STI, you know you have the perfect platform to craft a masterpiece on wheels. At WRXDaily, we understand that every enthusiast has a vision, and we’re here to offer the WRX STI mods you need to bring yours to life. With products tailored to elevate performance, enhance style, and perfect handling, our curated selection puts endless possibilities at your fingertips. 

No matter what you need, our Subaru WRX STI modifications deliver quality and reliability you can trust. From high-performance upgrades to must-have Subaru STI accessories, we have everything you need to create a car that’s as bold and unique as your passion for driving. Own a 2018 WRX? We offer a variety of 2018 WRX parts designed to fit your specific model. 

With WRXDaily, your Subaru becomes a true reflection of your style and ambition. Browse our selection of WRX STI mods today and start your next build!