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2015-2021 WRX STI Mods

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Perrin Red Charge Pipe 2015-2021 WRX

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

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 Black Charge Pipe 2015-2021 WRX

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

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 Neon Yellow Charge Pipe 2015-2021 WRX

$407.00
$407.00 - $407.00
$407.00
$305.25
$305.25 - $305.25
$305.25

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 Pink Charge Pipe 2015-2021 WRX

$407.00
$407.00 - $407.00
$407.00
$305.25
$305.25 - $305.25
$305.25

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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COBB Tuning Coolant Overflow Tank 2015-2021 WRX/STI

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

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

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COBB Tuning Charge Pipe Kit 2015-2021 WRX

$305.00 - $305.00
$305.00
$305.00 - $305.00
$305.00

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 Hot Pipe Kit 2015-2021 WRX

$370.00 - $370.00
$370.00
$370.00 - $370.00
$370.00

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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CSF 2-Row Aluminum Radiator 2008-2021 WRX/STI

$455.00 - $455.00
$455.00
$455.00 - $455.00
$455.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION CSF uses new te...

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COBB Tuning Cold Pipe Kit 2015-2021 WRX

$480.00 - $480.00
$480.00
$480.00 - $480.00
$480.00

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 Silver Top Mount Intercooler 2015-2021 WRX

$985.00 - $985.00
$985.00
$985.00 - $985.00
$985.00

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 Black Top Mount Intercooler 2015-2021 WRX

$985.00 - $985.00
$985.00
$985.00 - $985.00
$985.00

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 Silver 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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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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COBB Tuning Silver Top Mount Intercooler Kit 2015-2021 WRX

$1,205.00 - $1,205.00
$1,205.00
$1,205.00 - $1,205.00
$1,205.00

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 Black Top Mount Intercooler Kit 2015-2021 WRX

$1,205.00 - $1,205.00
$1,205.00
$1,205.00 - $1,205.00
$1,205.00

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 Black Front Mount Intercooler Kit 2015-2021 WRX

$2,625.00 - $2,625.00
$2,625.00
$2,625.00 - $2,625.00
$2,625.00

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 Silicone Radiator Hoses 2008-2014 WRX / 2008-2021 STI

$120.00 - $120.00
$120.00
$120.00 - $120.00
$120.00

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

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COBB Tuning Hot Pipe Kit 2015-2021 STI

$475.00 - $475.00
$475.00
$475.00 - $475.00
$475.00

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 Cold Pipe Kit 2015-2021 STI

$475.00 - $475.00
$475.00
$475.00 - $475.00
$475.00

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 Silver 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

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 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 TMIC Coupler 2008-2021 WRX

$80.00 - $80.00
$80.00
$80.00 - $80.00
$80.00

The COBB TMIC Coupler replaces the leak-prone factory hose and looks good while doing so! Over time the factory hoses become brittle and crack. T...

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GrimmSpeed Black Charge Pipe Kit 2015-2021 WRX

$310.00
$310.00 - $310.00
$310.00
$279.00
$279.00 - $279.00
$279.00

DESCRIPTION The GrimmSpeed Charge Pipe Kit replaces the restrictive stock plastic unit on the FA20-powered WRX with larger diameter CNC mandrel ben...

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Perrin Top Mount Intercooler Kit 2008-2021 STI

$890.00
$890.00 - $890.00
$890.00
$667.50
$667.50 - $667.50
$667.50

DESCRIPTION The Perrin TMIC is 12% larger than the nearest competitor's core. The large core means less restriction and better cooling capabilities...

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COBB Tuning Silicone Radiator Hose Kit 2015-2021 WRX

$105.00 - $105.00
$105.00
$105.00 - $105.00
$105.00

DESCRIPTION Upgrade the look and performance of your engine bay with the COBB Tuning Silicone Radiator Hoses. These 3-ply reinforced silicone hoses...

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Process West Black Verticooler Top Mount Intercooler Kit 2015-2021 WRX

$1,103.44 - $1,103.44
$1,103.44
$1,103.44 - $1,103.44
$1,103.44

DESCRIPTION Taking a fresh approach formed from years of motorsport and component design experience, Process West proudly introduces the Verti-Cool...

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Process West Black Khanacooler Top Mount Intercooler 2015-2021 WRX

$735.00 - $735.00
$735.00
$735.00 - $735.00
$735.00

DESCRIPTION The Process West Intercooler Khanacooler is a direct-fit top-mounted intercooler solution for the 2015–2021 Subaru WRX that combines OE...

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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!