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2015-2021 WRX STI Mods

GrimmSpeed V2 Cast Aluminum Turbo Inlet 2015-2021 WRX

Original price $199.00
Original price $199.00 - Original price $199.00
Original price $199.00
Current price $179.10
$179.10 - $179.10
Current price $179.10

DESCRIPTION One of the biggest complaints we’ve heard from 2015-21 WRX owners has to do with cracks forming in their OEM plastic turbo inlets from ...

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GrimmSpeed V2 Bypass Valve 2015-2021 WRX

Original price $259.00
Original price $259.00 - Original price $259.00
Original price $259.00
$233.10 - $259.00
$233.10 - $259.00
Current price $233.10

DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...

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PLM EWG 38mm Up-Pipe w/ Dump Tube 2002-2014 WRX / 2004-2021 STI

Original price $339.00
Original price $339.00 - Original price $339.00
Original price $339.00
$271.20 - $339.00
$271.20 - $339.00
Current price $271.20

PLM Private Label Mfg. Power Driven Subaru EWG Up-Pipe with Dump Tube 38mm features a unique designed up pipe which gives you the option to install...

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Koyorad Aluminum Racing Radiator 2008-2021 WRX/STI

Original price $471.30
Original price $471.30 - Original price $471.30
Original price $471.30
Current price $399.00
$399.00 - $399.00
Current price $399.00

The Hyper V-Core Series is the newest to the Koyorad | Koyo All Aluminum Racing Radiator line up. An engine's cooling system in many newer vehicles...

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ETS Turbo Kit 2015-2021 WRX

Original price $6,095.00 - Original price $6,600.00
Original price
$6,095.00 - $6,600.00
$6,095.00 - $6,600.00
Current price $6,095.00

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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GrimmSpeed Red Stealthbox Intake 2015-2021 WRX

Original price $415.00 - Original price $415.00
Original price
$415.00
$415.00 - $415.00
Current price $415.00

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

Original price $415.00 - Original price $415.00
Original price
$415.00
$415.00 - $415.00
Current price $415.00

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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FactionFab 3D Turbo Blanket Lava Subaru FA

Original price $150.00 - Original price $150.00
Original price
$150.00
$150.00 - $150.00
Current price $150.00

DESCRIPTION Here, you are looking at the FactionFab 3D Turbo Blanket Lava Subaru FA Turbo Blanket. Turbochargers work on the basis of heat energy a...

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FactionFab MLS Head to Exhaust Manifold Gasket Subaru EJ Models

Original price $12.00 - Original price $12.00
Original price
$12.00
$12.00 - $12.00
Current price $12.00

DESCRIPTION The FactionFab MLS Head to Exhaust Manifold Gasket for EJ Models is a quality and durable gasket that will provide your vehicle with a ...

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FactionFab MLS Exhaust Manifold to Up-Pipe Gasket Subaru EJ Models

Original price $14.00 - Original price $14.00
Original price
$14.00
$14.00 - $14.00
Current price $14.00

DESCRIPTION The FactionFab MLS Exhaust Manifold to Up-Pipe Gasket for Subaru EJ Models is a quality and durable gasket that will provide your vehic...

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FactionFab MLS Up-Pipe to Turbo Gasket Subaru EJ Models

Original price $15.00 - Original price $15.00
Original price
$15.00
$15.00 - $15.00
Current price $15.00

DESCRIPTION The FactionFab MLS Up-Pipe to Turbo Gasket for Subaru EJ Models is a quality and durable gasket that will provide your vehicle with a d...

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FactionFab MLS Turbo to Downpipe Gasket Subaru EJ Models

Original price $17.00 - Original price $17.00
Original price
$17.00
$17.00 - $17.00
Current price $17.00

DESCRIPTION The FactionFab MLS Turbo to Downpipe Gasket for Subaru EJ Models is a quality and durable gasket that will provide your vehicle with a ...

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FactionFab OE Line Subaru EJ Head to Exhaust Manifold Gasket

Original price $8.00 - Original price $8.00
Original price
$8.00
$8.00 - $8.00
Current price $8.00

DESCRIPTION Obtain the factory OE gasket at a fraction of the cost compared to dealership prices with this FactionFab OE Line Subaru EJ Head to Exh...

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FactionFab OE Line Subaru EJ Turbo to Downpipe Gasket

Original price $12.00 - Original price $12.00
Original price
$12.00
$12.00 - $12.00
Current price $12.00

DESCRIPTION Obtain the factory OE gasket at a fraction of the cost compared to dealership prices with this FactionFab OE Line Subaru EJ Turbo to Do...

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FactionFab Subaru Pitch Stop Mount 2002+ WRX/STI

Original price $120.00 - Original price $120.00
Original price
$120.00
$120.00 - $120.00
Current price $120.00

DESCRIPTION The Faction Fab Billet Aluminum Pitch Stop features a unique design that eliminates front to back engine movement while eliminating the...

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FactionFab 3D Turbo Blanket Lava Subaru EJ Models

Original price $150.00 - Original price $150.00
Original price
$150.00
$150.00 - $150.00
Current price $150.00

DESCRIPTION Here, you are looking at the Faction Fab Subaru EJ Series Motor Turbo Blanket. Turbochargers work on the basis of heat energy and keepi...

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OLM LE Dry Carbon Fiber Belt Cover 2015-2021 STI

Original price $199.00 - Original price $199.00
Original price
$199.00
$199.00 - $199.00
Current price $199.00

DESCRIPTION The OLM LE Dry Carbon Fiber Belt Cover, imported from Japan, exemplifies this commitment to quality craftsmanship. Axis Parts meti...

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Blouch Dominator 2.5XT-R 10cm^2 3" Inlet Turbo 2002-2007 WRX / 2004-2021 STI

Original price $1,925.00
Original price $1,925.00 - Original price $1,925.00
Original price $1,925.00
Current price $1,732.50
$1,732.50 - $1,732.50
Current price $1,732.50

BLCDOM2.5XTR3IN This is the Blouch Dominator 2.5XT-R 10cm2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to ab...

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Blouch Dominator 5.0XT-R 10cm^2 Turbo 2002-2007 WRX / 2004-2021 STI

Original price $2,255.00
Original price $2,255.00 - Original price $2,255.00
Original price $2,255.00
Current price $2,029.50
$2,029.50 - $2,029.50
Current price $2,029.50

BLCDOM5.0 The Blouch Dominator 5.0XT-R 10cm2 Turbocharger is rated to 650 HP for those with a built engine, good tune, and the right supporting fue...

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Blouch Dominator 3.0XT-R 10cm^2 Turbo 2002-2007 WRX / 2004-2021 STI

Original price $2,035.00
Original price $2,035.00 - Original price $2,035.00
Original price $2,035.00
Current price $1,831.50
$1,831.50 - $1,831.50
Current price $1,831.50

BLCDOM3.0XTR This is the Blouch Dominator 3.0 XTR 10cm2 Turbocharger for the 02-07 Subaru WRX and 04+ STI. This is a ball-bearing turbocharger that...

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Blouch Dominator 1.5XT-R 8cm^2 Turbo 2002-2007 WRX / 2004-2021 STI

Original price $1,815.00
Original price $1,815.00 - Original price $1,815.00
Original price $1,815.00
Current price $1,633.50
$1,633.50 - $1,633.50
Current price $1,633.50

BLCDOM1.5XT8CM2 This is the Blouch Dominator 1.5XT-R 8CM2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to abo...

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Blouch Dominator 2.5XT-R 8cm^2 Turbo 2002-2007 WRX / 2004-2021 STI

Original price $1,925.00
Original price $1,925.00 - Original price $1,925.00
Original price $1,925.00
Current price $1,732.50
$1,732.50 - $1,732.50
Current price $1,732.50

BLCDOM2.5XTR8CM2 This is the Blouch Dominator 2.5 XT-R 8cm2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to a...

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Blouch Dominator 1.5XT-R 10cm^2 Turbo 2002-2007 WRX / 2004-2021 STI

Original price $1,815.00
Original price $1,815.00 - Original price $1,815.00
Original price $1,815.00
Current price $1,633.50
$1,633.50 - $1,633.50
Current price $1,633.50

BLCDOM1.5XT This is the Blouch Dominator 1.5XT-R 10CM2 Turbocharger. This is a ball-bearing turbocharger that can support up to about 480 horsepowe...

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Perrin Recirculating Blow Off Valve 2002-2007 WRX / 2004-2021 STI

Original price $278.00
Original price $278.00 - Original price $278.00
Original price $278.00
Current price $208.50
$208.50 - $208.50
Current price $208.50

Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...

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Perrin Panel Filter 2002+ WRX / 2004-2021 STI

Original price $67.00 - Original price $76.00
Original price $67.00 - Original price $76.00
Original price $67.00
$50.25 - $57.00
$50.25 - $57.00
Current price $50.25

The PERRIN High Flow Washable Replacement Air Filter is the last filter you will ever need to buy. Not only is it washable, but it will increase ho...

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Perrin Master Cylinder Brace 2015-2021 WRX/STI

Original price $160.00
Original price $160.00 - Original price $160.00
Original price $160.00
Current price $120.00
$120.00 - $120.00
Current price $120.00

The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness and response. REDU...

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Perrin Intercooler Core 2015-2021 WRX/STI

Original price $1,111.00
Original price $1,111.00 - Original price $1,111.00
Original price $1,111.00
Current price $833.25
$833.25 - $833.25
Current price $833.25

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

Perrin Heat Shield 2002-2014 WRX / 2004-2021 STI

Original price $111.00
Original price $111.00 - Original price $111.00
Original price $111.00
Current price $83.25
$83.25 - $83.25
Current price $83.25

Don't leave your turbo uncovered! Protect your intercooler from radiant heat from your turbo with the PERRIN Turbo Heat Shield!

Perrin Front Mount Intercooler Kit 2015-2021 STI

Original price $2,822.00 - Original price $2,940.00
Original price $2,822.00 - Original price $2,940.00
Original price $2,822.00
$2,116.50 - $2,205.00
$2,116.50 - $2,205.00
Current price $2,116.50

PERRIN Front Mount Intercooler Kits are ideal for those who want to get the most out of their turbocharged Subaru. Add power and a bold new look al...

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Perrin EBCS Pro Boost Control Solenoid 2015-2021 WRX

Original price $199.00
Original price $199.00 - Original price $199.00
Original price $199.00
Current price $149.25
$149.25 - $149.25
Current price $149.25

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 Hyper Pink Cold Air Intake 2018-2021 STI

Original price $333.00
Original price $333.00 - Original price $333.00
Original price $333.00
Current price $249.75
$249.75 - $249.75
Current price $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 Brake Reservoir Cover 2002+ WRX/STI

Original price $15.00
Original price $15.00 - Original price $15.00
Original price $15.00
Current price $11.25
$11.25 - $11.25
Current price $11.25

Dress up your engine bay while preventing leaks and spills from your master cylinder reservoir with the PERRIN Brake Reservoir Cozy.  Easy Installa...

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Perrin AFTA-MAF Intake Tube 2008-2014 WRX/STI

Original price $126.00
Original price $126.00 - Original price $126.00
Original price $126.00
Current price $94.50
$94.50 - $94.50
Current price $94.50

Perrin 3.0" Turbo Inlet 2002-2007 WRX/ 2004-2021 STI

Original price $333.00
Original price $333.00 - Original price $333.00
Original price $333.00
Current price $249.75
$249.75 - $249.75
Current price $249.75

Perrin 2.4" Turbo Inlet Hose 2002-2007 WRX/ 2004-2021 STI

Original price $333.00
Original price $333.00 - Original price $333.00
Original price $333.00
Current price $249.75
$249.75 - $249.75
Current price $249.75

Cusco Type OS Strut Bar Quick Release Lever

Original price $60.00
Original price $60.00 - Original price $60.00
Original price $60.00
Current price $54.00
$54.00 - $54.00
Current price $54.00

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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!