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2015-2021 WRX & STI Mods

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

$455.00
$455.00 - $455.00
$455.00
$479.00
$479.00 - $479.00
$479.00

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

$1,629.00 - $2,046.00
$1,629.00 - $2,046.00
$1,629.00
$1,629.00 - $2,046.00

FP Black HTZ Compressor wheel - 82HTZ Flow rating - 71LB per minute CW Measurements - 59.1MM Inducer / 82MM Exducer TW Measurements - 67.3MM ...

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Perrin Red Pulley Cover 2002-2014 WRX / 2004-2021 STI

$78.75
$78.75 - $78.75
$78.75
$105.00
$105.00 - $105.00
$105.00

DESCRIPTION Perrins pulley cover is designed to give your engine bay extra aesthetics while protecting your engine components from debris and forei...

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Perrin Hella Horn Bracket 2015-2021 WRX / 2015-2021 STI

$42.00
$42.00 - $42.00
$42.00
$56.00
$56.00 - $56.00
$56.00

DESCRIPTION The Perrin Brackets for HELLA Horns are designed for a perfect fit. Tailored for specific models makes for a better fit than competitor...

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GrimmSpeed Street Transmission Mount 2002+ WRX / 2004-2021 STI

$249.00
$249.00 - $249.00
$249.00
$249.00 - $249.00

The ALL NEW GrimmSpeed Transmission Mounts are designed to lock down your Subaru's drivetrain and enhance the driving experience, while keeping cab...

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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 SF Intake + Airbox 2019-2021 STI

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

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

DESCRIPTION Replace your old, dried out factory radiator hoses with the COBB Tuning Silicone Radiator Hoses. Constructed of 3-ply reinforced sil...

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COBB Tuning Silicone Turbo Inlet V2 2008-2021 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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Perrin Engine Mount Kit 2002+ WRX / 2004-2021 STI

$276.75
$276.75 - $276.75
$276.75
$369.00
$369.00 - $369.00
$369.00

Perrin Engine Mount Kit 2002-2021 WRX/STI OVERVIEW PERRIN Engine Mounts reduce motor movements, efficiently transmit motor power and give drivers ...

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Radium Master Cylinder Brace 2015-2021 WRX/STI

$94.95
$94.95 - $94.95
$94.95
$99.95
$99.95 - $99.95
$99.95

This Radium Engineering master cylinder brace is compatible with the left hand drive (LHD) 15-21 Subaru WRX, 15-21 Subaru WRX STi, and 14-18 Forest...

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Process West Black Intake Manifold Street 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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Injector Dynamics 1750cc Fuel Injectors 2002-2014 WRX / 2007-2021 STI

$1,339.80
$1,339.80 - $1,339.80
$1,339.80
$1,339.80 - $1,339.80

The Injector Dynamics ID1750-XDS fuel injectors are a high-flow, top-feed injector set built for Subaru owners who need serious fueling headroom fo...

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COBB Tuning Air Filter Cleaning Kit - Clear

$25.00
$25.00 - $25.00
$25.00
$25.00 - $25.00

Description The COBB Universal Air Filter Cleaning Kit includes everything needed to bring new life back into your COBB SF Intake filter or High ...

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IAG Red Street Series Air Oil Separator 2008-2014 WRX / 2008-2021 STI

$499.99
$499.99 - $499.99
$499.99
$499.99 - $499.99

SAFEGUARD YOUR SUBARU The IAG Performance Air / Oil Separator (AOS) is a smart upgrade for your Subaru. Developed through years of meticul...

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GrimmSpeed Red Strut Bar 2015-2021 WRX/STI

$249.00
$249.00 - $249.00
$249.00
$249.00 - $249.00

DESCRIPTION The GrimmSpeed Front Strut Bar for the 2015-2021 Subaru WRX/STI blends precision engineering with clean aesthetics to deliver serious p...

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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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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 Redline Carbon Fiber Intake 2015-2021 WRX

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

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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Perrin Red Intercooler Shroud 2015-2021 WRX

$255.75
$255.75 - $255.75
$255.75
$341.00
$341.00 - $341.00
$341.00

The PERRIN Engine Cover Kit replaces the OEM plastic engine cover, adding color and style to your engine bay. ENGINE DRESS-UP Add a bit of flair a...

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COBB Tuning Fuel Rails/Line Kit Package 2008-2021 STI

$775.00
$775.00 - $775.00
$775.00
$775.00 - $775.00

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 System Package 2008-2021 STI

$1,825.00
$1,825.00 - $1,825.00
$1,825.00
$1,825.00 - $1,825.00

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

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IAG Silver Street Series Oil Pan Package 2002-2014 WRX / 2004-2021 STI

$699.99
$699.99 - $699.99
$699.99
$699.99 - $699.99

IAG offers our V2 Oil Pickup, Street Series Baffle and Windage Tray combined with our New Oil Pan as a complete package.About Street Series EJ Oil ...

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Perrin Neon Yellow 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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IAG PTFE Fuel System Kit w/ Aeromotive FPR, IAG Fuel Rails 2008-2014 WRX / 2008-2021 STI

$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$1,099.99 - $1,099.99

AG PTFE FUEL SYSTEM KIT W/ AEROMOTIVE FPR, IAG FUEL RAILS FOR 08-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY When designing the IA...

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Perrin Red 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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ETS Top Mount Intercooler 2008-2021 STI

$695.00 - $895.00
$695.00 - $895.00
$695.00
$695.00 - $895.00

Best TMIC on the market! Extreme Turbo Systems has designed a direct bolt on top mount intercooler for the 08-21 Subaru STI. This intercooler featu...

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Perrin Red Battery Tie Down 2002-2026 WRX / 2004-2021 STI

$61.50
$61.50 - $61.50
$61.50
$82.00
$82.00 - $82.00
$82.00

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

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Revel GT Dry Carbon Fuse Box Cover 2008-2021 WRX/STI

$137.75
$137.75 - $137.75
$137.75
$145.00
$145.00 - $145.00
$145.00

ENHANCE INTERIOR Enhance the look of the interior with perfectly fitted dry carbon overlays. Using various methods of extensive testing for eac...

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GrimmSpeed Front Mount Intercooler Bumper Bar 2015-2021 WRX/STI

$219.00
$219.00 - $219.00
$219.00
$219.00 - $219.00

DESCRIPTION To help keep chassis deflection at bay and to keep any large dents out of your front fascia we’re offering the GrimmSpeed Bumper Bar as...

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COBB Tuning Redline Stage 1 + Carbon Fiber Power Package 2015-2021 WRX

$1,428.00
$1,428.00 - $1,428.00
$1,428.00
$1,505.00
$1,505.00 - $1,505.00
$1,505.00

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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Perrin Black Top Mount Intercooler 2015-2021 WRX

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

Add a consistent 10+ wheel horsepower with one of the largest Top Mounted Intercoolers on the market! We pushed every dimension to make this the b...

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Compressive Tuning Intercooler Guard 2015-2021 WRX

$135.00
$135.00 - $135.00
$135.00
$135.00 - $135.00

Compressive Tuning Intercooler Guard 2022+ WRX Introducing AirShields by Compressive Tuning – the ultimate combination of durability, fu...

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IBR Air Oil Separator 2002-2007 WRX / 2004-2021 STI

$329.99
$329.99 - $329.99
$329.99
$329.99 - $329.99

This kit is designed to be the best AOS on the market. It is a triple pass system with carefully designed diameters and cross sect...

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

$455.00
$455.00 - $455.00
$455.00
$479.00
$479.00 - $479.00
$479.00

SPECS: 100% all-aluminum TIG-welded construction New black finish to provide a cleaner look Includes CNC-machined mounting brackets 2-row 42mm ult...

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GrimmSpeed Top Mount Intercooler Splitter 2015-2021 STI

$255.00
$255.00 - $255.00
$255.00
$255.00 - $255.00

DESCRIPTION This is the Grimmspeed Splitter that is available for separate purchase. This particular splitter comes with the Grimmspeed Top Mount I...

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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!