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2015-2021 WRX STI Mods

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GrimmSpeed Red Stealthbox Intake 2015-2021 WRX

$415.00
$415.00 - $415.00
$415.00
$373.50
$373.50 - $373.50
$373.50

DESCRIPTION The GrimmSpeed Red StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide t...

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GrimmSpeed Black Stealthbox Intake 2015-2021 WRX

$415.00
$415.00 - $415.00
$415.00
$373.50
$373.50 - $373.50
$373.50

DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...

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Perrin Hyper Pink Cold Air Intake 2018-2021 STI

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

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

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AEM Cold Air Intake Wrinkle Red 2018 STI

$349.99
$349.99 - $349.99
$349.99
$299.99
$299.99 - $299.99
$299.99

The AEM 21-836WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle’s restrictive factory air filter...

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AEM Cold Air Intake 2019-2021 STI

$419.99
$419.99 - $419.99
$419.99
$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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GrimmSpeed Red Stealthbox Intake 2015-2021 STI

$359.00
$359.00 - $359.00
$359.00
$323.10
$323.10 - $323.10
$323.10

DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...

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PLM Cold Air Intake 2015-2021 WRX

$295.00 - $295.00
$295.00
$295.00 - $295.00
$295.00

PLM Cold Air Intake with Heat ShieldVehicle Applications: 2015 - 2019 Subaru WRX Fits only US Market WRX due to different variations in body panel...

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ETS Stainless Steel Air Intake Kit 2015-2021 STI

$295.00 - $295.00
$295.00
$295.00 - $295.00
$295.00

The ETS Cold Air Intake locates the filter in the fender well out of the engine bay. This makes for not only the coldest air possible but the most ...

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ETS Titanium Air Intake Kit 2015-2021 STI

$495.00 - $495.00
$495.00
$495.00 - $495.00
$495.00

The ETS Cold Air Intake locates the filter in the fender well out of the engine bay. This makes for not only the coldest air possible but the most ...

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AEM Cold Air Intake Silver 2015-2021 WRX

$419.99
$419.99 - $419.99
$419.99
$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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Perrin Black Cold Air Intake 2018-2021 STI

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

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

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Perrin Neon Yellow Cold Air Intake 2018-2021 STI

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

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

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Perrin Red Cold Air Intake 2018-2021 STI

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

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

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ETS Titanium Intake Kit 2015-2021 STI

$495.00 - $495.00
$495.00
$495.00 - $495.00
$495.00

The ETS Cold Air Intake locates the filter in the fender well out of the engine bay. This makes for not only the coldest air possible but the most ...

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Perrin Black Cold Air Intake 2015-2021 WRX

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

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 Neon Yellow Cold Air Intake 2015-2021 WRX

$495.00
$495.00 - $495.00
$495.00
$371.25
$371.25 - $371.25
$371.25

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 Red Cold Air Intake 2015-2021 WRX

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

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 Pink Cold Air Intake 2015-2021 WRX

$495.00
$495.00 - $495.00
$495.00
$371.25
$371.25 - $371.25
$371.25

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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COBB Tuning SF Intake System 2015-2021 WRX

$545.00 - $545.00
$545.00
$545.00 - $545.00
$545.00

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 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 SF Intake + Airbox 2015-2018 STI

$540.00 - $540.00
$540.00
$540.00 - $540.00
$540.00

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 SF Intake System 2008-2014 WRX / 2008-2021 STI

$340.00 - $340.00
$340.00
$340.00 - $340.00
$340.00

DESCRIPTION The COBB Tuning SF Intake removes a pre-turbo restriction in the stock intake system. The SF Intake intake system utilizes sever...

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COBB Tuning Airbox 2019-2021 STI

$290.00 - $290.00
$290.00
$290.00 - $290.00
$290.00

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 SF Intake + Airbox 2019-2021 STI

$575.00 - $575.00
$575.00
$575.00 - $575.00
$575.00

DESCRIPTION Setting the standard for MAF style intakes with a velocity stack, airflow straighteners and composite body for ultimate performa...

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ETS Cold Air Intake 2015-2021 WRX

$359.00 - $459.00
$359.00 - $459.00
$359.00 - $459.00
$359.00

Our intake system utilizes a stock size MAF housing that doesn't require any retuning. You can bolt this on and notice immediate performance gains!...

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GrimmSpeed Black StealthBox Intake 2015-2021 STI

$359.00
$359.00 - $359.00
$359.00
$323.10
$323.10 - $323.10
$323.10

DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...

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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!