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2015-2021 WRX & STI Mods

IAG 950 2.35L Destroked Long Block Engine w/ IAG 950 Heads 2002-2014 WRX / 2004-21 STI

$14,599.99 - $14,899.99
$14,599.99 - $14,899.99
$14,599.99
$14,599.99 - $14,899.99

IAG 950 2.35L DESTROKED LONG BLOCK ENGINE W/ IAG 950 HEADS DROP IN AND DRIVE The IAG Performance han...

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GrimmSpeed 4 Piston Brake Caliper Kit Red 2002-2021 WRX / 2004-2021 STI

$1,608.00 - $1,624.00
$1,608.00 - $1,624.00
$1,608.00
$1,608.00 - $1,624.00

The stock single-piston caliper found on most Subaru platforms gets the job done — but it wasn’t designed for the kind of aggressive driving, track...

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MBRP Armor Pro Series Single Exit Catback w/ Carbon Fiber Tip 2011-2021 WRX / 2011-2021 STI

$824.99
$824.99 - $824.99
$824.99
$1,019.11
$1,019.11 - $1,019.11
$1,019.11

DESCRIPTION The MBRP Armor Pro Series Single Exit Cat-Back with Carbon Fiber Tip is the perfect blend of race-ready performance and premium style f...

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MBRP Armor Pro Series Single Exit Catback w/ Burnt Tip 2011-2021 WRX / 2011-2021 STI

$779.99
$779.99 - $779.99
$779.99
$963.52
$963.52 - $963.52
$963.52

DESCRIPTION Get race-ready sound and standout style with the MBRP Armor Pro Series Single Exit Cat-Back Exhaust with Burnt Tip for the 2011–2021 WR...

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SuperPro Front and Rear Sway Bar Kit 2015-2021 WRX

$809.99
$809.99 - $809.99
$809.99
$899.99
$899.99 - $899.99
$899.99

The Ultimate handling package!Fitting larger sway bars, has two main effects, vehicle balance in terms of understeer and oversteer, and increased r...

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OLM Y-Spec LED Taillights Clear Lens Red Optic 2015-2021 WRX/STI

$499.00
$499.00 - $499.00
$499.00
$499.00 - $499.00

DESCRIPTION Upgrade your Subaru WRX or STI with the latest in automotive lighting technology. The OLM Y-Spec LED Taillights with a clear lens and s...

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Mishimoto Aluminum Coolant Expansion Tank 2002-2007 WRX / 2004-2016 STI

$188.95
$188.95 - $188.95
$188.95
$208.00
$208.00 - $208.00
$208.00

DESCRIPTION Upgrade your cooling system with the Mishimoto Aluminum Coolant Expansion Tank for the 2002-2007 Subaru WRX and 2004-2016 STI. Designed...

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Mishimoto Silver Oil Cooler Kit 2015-2021 STI

$570.95 - $624.95
$570.95 - $624.95
$570.95
$628.00 - $687.00
$628.00 - $687.00
$628.00

DESCRIPTION The Mishimoto Oil Cooler Kit for the 2015-2021 Subaru STI is designed to keep your engine cool and reliable, whether on the street or t...

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Mishimoto Silver Top Mount Intercooler Kit 2008-2021 STI

$695.95
$695.95 - $695.95
$695.95
$766.00
$766.00 - $766.00
$766.00

DESCRIPTION The Mishimoto Performance Direct-Fit Top-Mount Intercooler for the 2008-2021 Subaru WRX STI is designed to reduce intake temperatures a...

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Mishimoto Titanium Turbo Blanket 2015-2021 WRX

$159.95
$159.95 - $159.95
$159.95
$176.00
$176.00 - $176.00
$176.00

DESCRIPTION The Mishimoto Turbo Blanket for the 2015-2021 Subaru WRX is an essential upgrade to reduce engine bay heat and enhance turbo efficiency...

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Mishimoto Titanium Turbo Blanket 2002-2014 WRX / 2004-2021 STI

$85.95
$85.95 - $85.95
$85.95
$95.00
$95.00 - $95.00
$95.00

DESCRIPTION The Mishimoto Turbo Blanket is a must-have upgrade for 2001-2014 Subaru WRX and 2004-2017 STI owners seeking to reduce engine bay heat ...

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Mishimoto Baffled Oil Catch Can System 2015-2016 WRX

$543.95
$543.95 - $543.95
$543.95
$598.00
$598.00 - $598.00
$598.00

DESCRIPTION The Mishimoto Baffled Oil Catch Can System for 2015-2016 Subaru WRX is engineered to reduce carbon buildup in FA20-DIT engines, a commo...

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Mishimoto Silver Oil Cooler Kit 2015-2021 WRX

$706.95 - $822.95
$706.95 - $822.95
$706.95
$778.00 - $905.00
$778.00 - $905.00
$778.00

DESCRIPTION Protect your engine with the Mishimoto Direct-Fit Oil Cooler Kit, designed for 2015-2021 Subaru WRX models. Engineered to work alongsid...

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Mishimoto Black Transmission Cooler 2015-2021 WRX

$398.95
$398.95 - $398.95
$398.95
$439.00
$439.00 - $439.00
$439.00

DESCRIPTION The CVT transmission in the 2015-2021 Subaru WRX is an impressive system, providing smooth and seamless gear changes with the pull of a...

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Mishimoto Black Street Performance Top Mount Intercooler 2015-2021 WRX

$665.95
$665.95 - $665.95
$665.95
$733.00
$733.00 - $733.00
$733.00

DESCRIPTION The Mishimoto Street Performance Intercooler takes the place of the stock unit and is specifically designed for use on the stock tune u...

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Mishimoto Polished Charge Pipe Kit 2015-2021 WRX

$319.95
$319.95 - $319.95
$319.95
$352.00
$352.00 - $352.00
$352.00

DESCRIPTION Looking for a way to improve spool-up, increase power potential, and improve engine bay aesthetics? Mishimoto has you covered with thei...

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Perrin Silver Top Mount Intercooler Kit 2008-2021 STI

$790.50
$790.50 - $790.50
$790.50
$930.00
$930.00 - $930.00
$930.00

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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GrimmSpeed Red Electronic Boost Control Cover 2008-2021 STI

$62.00
$62.00 - $62.00
$62.00
$62.00 - $62.00

DESCRIPTION We decided on a subtle design for this cover that mimics the “vent” styling on our matching GrimmSpeed Alternator Cover. Is it made fro...

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GrimmSpeed Head Gasket Set 2015-2021 WRX

$199.00 - $209.00
$199.00 - $209.00
$199.00
$199.00 - $209.00

DESCRIPTION Feature-packed, these gaskets are a perfect fit for any engine build, from basic refresh to a high horsepower track monster. The GrimmS...

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COBB Tuning Daily Driver Suspension Package 2015-2021 STI

$1,250.00
$1,250.00 - $1,250.00
$1,250.00
$1,250.00 - $1,250.00

DESCRIPTION Completely transform the handling and ride quality of your Subaru WRX/STI with the COBB Daily Driver Package! This include our custom...

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COBB Tuning Competition Ready Suspension Package 2015-2021 STI

$5,325.00
$5,325.00 - $5,325.00
$5,325.00
$5,325.00 - $5,325.00

DESCRIPTION This suspension package from Cobb is the ultimate grouping to get your suspension and ride adjustments dialed in to perfection. From br...

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COBB Stainless Steel Catback Exhaust 2011-2021 WRX / 2011-2021 STI

$1,565.00
$1,565.00 - $1,565.00
$1,565.00
$1,565.00 - $1,565.00

Description This COBB Stainless Steel Cat-Back Exhaust is a direct bolt on for the 2011-2021 GV and VA Subaru WRX/STI Sedan. ConstructionThe enti...

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COBB Previous Fuel Pressure Sensor Kit to Can Fuel Pressure Sensor Kit 2015-2021 WRX

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

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

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COBB Previous Sensor Kit to Can Flex Fuel Upgrade 2015-2017 WRX

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

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

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COBB Previous Sensor Kit to Can Flex Fuel Upgrade + Fuel Pressure Kit 2015-2017 WRX

$840.00
$840.00 - $840.00
$840.00
$840.00 - $840.00

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

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COBB Can Flex Fuel Upgrade 2015-2017 WRX

$1,035.00
$1,035.00 - $1,035.00
$1,035.00
$1,035.00 - $1,035.00

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

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COBB Previous Sensor Kit to Can Flex Fuel Upgrade 2018-2021 WRX

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

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

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Revel GT Carbon Alternator Cover 2015-2021 STI

$256.50
$256.50 - $256.50
$256.50
$270.00
$270.00 - $270.00
$270.00

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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Revel GT Dry Carbon Front Emblem Cover 2015-2021 WRX/STI

$104.50
$104.50 - $104.50
$104.50
$110.00
$110.00 - $110.00
$110.00

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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Revel GT Dry Carbon Engine Belt Cover 2008-2014 WRX / 2008-2021 STI

$261.25
$261.25 - $261.25
$261.25
$275.00
$275.00 - $275.00
$275.00

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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Revel GT Dry Carbon Trunk Door Garnish 2015-2021 WRX/STI

$242.25
$242.25 - $242.25
$242.25
$255.00
$255.00 - $255.00
$255.00

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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Revel GT Dry Carbon Mirror Cover Set 2015-2021 WRX/STI

$242.25
$242.25 - $242.25
$242.25
$255.00
$255.00 - $255.00
$255.00

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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Revel GT Dry Carbon M Style Mirror Cover Set 2015-2021 WRX/STI

$351.50
$351.50 - $351.50
$351.50
$370.00
$370.00 - $370.00
$370.00

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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Revel GT Dry Carbon Shifter Panel Cover 2015-2017 STI

$280.25
$280.25 - $280.25
$280.25
$295.00
$295.00 - $295.00
$295.00

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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Revel GT Dry Carbon Air Intake Cover 2015-2018 WRX/STI

$242.25
$242.25 - $242.25
$242.25
$255.00
$255.00 - $255.00
$255.00

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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Revel GT Dry Carbon Door Sill Cover Pair 2015-2021 WRX/STI

$242.25
$242.25 - $242.25
$242.25
$255.00
$255.00 - $255.00
$255.00

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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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!