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2015-2021 WRX & STI Mods

GrimmSpeed Black Alternator Cover 2002-2014 WRX / 2004-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

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COBB Tuning Can Flex Fuel Upgrade + Fuel Pressure Kit 2015-2017 WRX

$1,280.00
$1,280.00 - $1,280.00
$1,280.00
$1,280.00 - $1,280.00

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 Radiator Shroud 2015-2021 WRX/STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION The GrimmSpeed Radiator Shroud for the 2015-2021 Subaru WRX/STI is made from CNC laser cut and bent aluminum and covered in a very dura...

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GrimmSpeed Neon Green Fender Shrouds 2015-2021 WRX / 2015-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION The GrimmSpeed Fender Shrouds have been designed to fill in the unsightly factory gap between the insides of your front fenders, and th...

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GrimmSpeed Red Post-MAF Hose Kit 2015-2021 WRX

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

DESCRIPTION Thie GrimmSpeed Red Post-MAF Hose kit has been designed to replace the OEM hose to increase the flow to improve the overall power and r...

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Verus Engine Bay Cap Kit 2015-2021 WRX/STI

$232.95
$232.95 - $232.95
$232.95
$232.95 - $232.95

OVERVIEW Cover up the lackluster plastic caps that come on your factory WRX/STI (VA/GR/GV) with a cap machined from solid aluminum.  The caps a...

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Perrin Black Oil Cap 2002+ WRX / 2004-2021 STI

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

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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Perrin Red Oil Cap 2002+ WRX / 2004-2021 STI

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

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 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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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 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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Perrin Black Pulley Cover 2015-2021 WRX

$124.50
$124.50 - $124.50
$124.50
$166.00
$166.00 - $166.00
$166.00

Accessorize the top of your engine and the pulleys with the PERRIN Belt Cover. Choose Red, Black, Neon Yellow, or Hyper Pink to accent your engine ...

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Perrin Neon Yellow Cam Solenoid Cover 2015+ WRX

$154.50
$154.50 - $154.50
$154.50
$206.00
$206.00 - $206.00
$206.00

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 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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Perrin Silver 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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TurboXS Front Mount Intercooler Kit Wrinkle Red 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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Perrin EBCS Pro Boost Control Solenoid 2015-2021 WRX

$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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AMS Performance Front Mount Intercooler Piping 2015-2021 WRX

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

COBB Tuning EJ Turbo Blanket Black Lava 2002-2014 WRX / 2004-2021 STI

$215.00
$215.00 - $215.00
$215.00
$215.00 - $215.00

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

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ETS Turbo Kit 2015-2021 WRX

$6,095.00 - $6,917.00
$6,095.00 - $6,917.00
$6,095.00
$6,095.00 - $6,917.00

The ETS Turbo Kit is the best kit on the market. Featuring Precision Turbo ball bearing turbos, dual Tial 38mm wastegates, and all other necessary ...

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COBB Tuning 20G Turbocharger 2008-2021 STI

$1,470.00
$1,470.00 - $1,470.00
$1,470.00
$1,470.00 - $1,470.00

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 Pitch Stop Brace 2015-2021 WRX / 2015-2021 STI

$264.00
$264.00 - $264.00
$264.00
$352.00
$352.00 - $352.00
$352.00

The OEM Subaru pitch stop brackets fail over time. Help prevent this failure with the PERRIN Pitch Stop Brace.  THE PROBLEM WITH THE OEM PITCH STO...

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APR Performance Carbon Fiber Alternator Cover 2008-2014 WRX / 2008-2021 STI

$138.60
$138.60 - $138.60
$138.60
$154.00
$154.00 - $154.00
$154.00

Dress-up the engine bay with carbon fiber, molded to precise dimensions that only pre-preg. materials can achieve.  These parts are exotic-looking,...

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IAG Black Competition Series Oil Pan Package 2002-2014 WRX / 2004-2021 STI

$899.99
$899.99 - $899.99
$899.99
$899.99 - $899.99

IAG offers our V2 Oil Pickup, Competition Series Baffle and Windage Tray combined with our New Oil Pan finished in black as a complete package.Abou...

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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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Radium TGV to Head Gasket 2002-2014 WRX / 2004-2021 STI

$8.50
$8.50 - $8.50
$8.50
$8.95
$8.95 - $8.95
$8.95

Metal reinforced, crush resistant, high temperature graphite fiber. Fits most Subaru EJ engines. Installs between intake manifold (TGVs) and cylind...

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

$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,199.99 - $1,199.99

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

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IAG PTFE Fuel System Kit w/ ID Injectors, Aeromotive FPR, IAG Fuel Rails 2008-2014 WRX/ 2008-2021 STI

$1,739.99 - $2,699.99
$1,739.99 - $2,699.99
$1,739.99
$1,739.99 - $2,699.99

IAG PTFE FUEL SYSTEM KIT W/ ID INJECTORS, AEROMOTIVE FPR, IAG FUEL RAILS FOR 2008-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY Whe...

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

$2,247.00
$2,247.00 - $2,247.00
$2,247.00
$2,247.00 - $2,247.00

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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AEM X-Series In-Line Wideband AFR Controller

$211.95
$211.95 - $211.95
$211.95
$238.95
$238.95 - $238.95
$238.95

AEM’s X-Series Inline Wideband UEGO Air/Fuel Ratio Controllers are built upon unique, patented, 100% digital technology that makes them the fastest...

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Blouch Dominator 3.0G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

$2,458.50 - $2,558.50
$2,458.50 - $2,558.50
$2,458.50
$2,458.50 - $2,558.50

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. DESCRIPTION The Blouch Dominator 3.0G2-R Ball Bearin...

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Cusco Drive Shaft Heat Shield (Front Right 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. 6A1 047 F

PLM Front Strut Tower Bar 2008-2021 WRX/STI

$195.00
$195.00 - $195.00
$195.00
$195.00 - $195.00

Draw from our success of the PLM strut tower bar for Honda models, we are pleased to offer our strut tower brace for Subaru WRX & STI. Made fr...

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ETS Single Scroll Turbo Kit 2015-2021 STI

$3,095.00 - $7,695.00
$3,095.00 - $7,695.00
$3,095.00
$3,095.00 - $7,695.00

The ETS Subaru STI Turbo Kit is one of the most complete kits on the market utilizing optimal intercooler pipe routing and a larger ported s-cover ...

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ETS Rotated Piping Kit 2015-2021 STI

$795.00 - $830.00
$795.00 - $830.00
$795.00
$795.00 - $830.00

This piping kit is the best on the market for relocating the factory Subaru intercooler. The factory intercooler location allows for excessive heat...

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ETS Stock Turbo Piping Kit 2015-2021 STI

$795.00 - $830.00
$795.00 - $830.00
$795.00
$795.00 - $830.00

This piping kit is the best on the market for relocating the factory Subaru intercooler. The factory intercooler location allows for excessive heat...

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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!