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2015-2021 WRX & STI Mods

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ACT Xtreme Race Rigid 4 Pad Clutch Kit w/ Flywheel 2006-2026 WRX

$1,230.00
$1,230.00 - $1,230.00
$1,230.00
$1,519.00
$1,519.00 - $1,519.00
$1,519.00

DESCRIPTION The ACT Xtreme Race Rigid 4 Pad Clutch Kit with Flywheel is designed for the 2006+ Subaru WRX and is built for extreme race-focused app...

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ACT Xtreme Duty Performance Street 6 Puck Clutch Kit w/ Flywheel 2006-2026 WRX

$1,304.00
$1,304.00 - $1,304.00
$1,304.00
$1,610.00
$1,610.00 - $1,610.00
$1,610.00

DESCRIPTION The ACT Xtreme Duty Performance Street 6 Puck Clutch Kit with Flywheel is designed for the 2006+ Subaru WRX and built for high horsepow...

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ACT XACT ProLite Flywheel 2006-2018 WRX

$392.00
$392.00 - $392.00
$392.00
$484.00
$484.00 - $484.00
$484.00

DESCRIPTION The ACT ProLite Flywheel is designed for the 2006–2018 Subaru WRX and is ACT’s lightest flywheel offering, engineered for the lowest ro...

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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit w/ Flywheel 2006-2026 WRX

$1,226.00
$1,226.00 - $1,226.00
$1,226.00
$1,514.00
$1,514.00 - $1,514.00
$1,514.00

DESCRIPTION The ACT Heavy Duty Race Sprung 4 Pad Clutch Kit with Flywheel is designed for the 2006+ Subaru WRX and is built for high horsepower str...

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ACT Heavy Duty Race Rigid 6 Puck Clutch Kit w/ Flywheel 2006-2026 WRX

$1,198.00
$1,198.00 - $1,198.00
$1,198.00
$1,479.00
$1,479.00 - $1,479.00
$1,479.00

DESCRIPTION The ACT Heavy Duty Race Rigid 6 Puck Clutch Kit with Flywheel is designed for the 2006+ Subaru WRX and built for aggressive race applic...

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ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 2006-2026 WRX

$1,180.00
$1,180.00 - $1,180.00
$1,180.00
$1,457.00
$1,457.00 - $1,457.00
$1,457.00

DESCRIPTION The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is designed for the 2006+ Subaru WRX and built for aggressive race applications. This ki...

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ACT Heavy Duty Race Rigid 6 Pad Clutch Kit 2006-2018 WRX

$954.00
$954.00 - $954.00
$954.00
$1,178.00
$1,178.00 - $1,178.00
$1,178.00

DESCRIPTION The ACT Heavy Duty Race Rigid 6 Pad Clutch Kit is designed for the 2006–2018 Subaru WRX and built for aggressive race applications. It ...

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ACT Heavy Duty 6-Puck Disc Clutch Kit 2006-2026 WRX

$1,001.00
$1,001.00 - $1,001.00
$1,001.00
$1,236.00
$1,236.00 - $1,236.00
$1,236.00

DESCRIPTION The ACT Heavy Duty 6-Puck Disc Clutch Kit is designed for the 2006+ Subaru WRX and built for high horsepower street or race application...

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TurboXS Front Mount Intercooler Kit Wrinkle Black 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 Carbon Fiber Rear Strut Tower Bar 2015-2021 WRX / 2015-2021 STI

$299.20
$299.20 - $299.20
$299.20
$352.00
$352.00 - $352.00
$352.00

Enhance chassis rigidity and improve steering precision with the ultra-strong PERRIN Rear Shock Tower Brace.  PERFORMANCE During cornering, the Pe...

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SuperPro Billet Pitch Stop Mount 2002-2026 WRX/ 2004-2021 STI

$143.99
$143.99 - $143.99
$143.99
$159.99
$159.99 - $159.99
$159.99

SuperPro control arms are an easy to install replacement/upgrade suspension part. Fixing many of the downfalls and issues associated with OE and ot...

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Exedy Stage 4 Twin Metallic Disc Clutch Kit 2004-2021 STI

$2,101.65
$2,101.65 - $2,101.65
$2,101.65
$2,472.59
$2,472.59 - $2,472.59
$2,472.59

Here, you are looking at the Exedy Stage 4 Twin Metallic Disc Clutch Kit. This clutch kit has been designed for high-powered applications as well a...

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Revel Medallion Ultra Titanium Single Exit Catback Exhaust 2011-2021 WRX/STI

$1,161.00
$1,161.00 - $1,161.00
$1,161.00
$1,290.00
$1,290.00 - $1,290.00
$1,290.00

FULL TITANIUM EXHAUST SYSTEM Introducing the Medallion Ultra Ti: a new line of full titanium exhausts that offers extremely light weight durability...

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COBB Airbox 2019-2021 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 th...

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COBB Adjustable Front Sway Bar 26mm 2-Position 2015-2021 STI

$375.00
$375.00 - $375.00
$375.00
$375.00 - $375.00

Description This COBB 26mm 2 point adjustable sway bar = more grip = better handling = outright performance - it's the best dollar for dollar h...

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COBB Fuel Pressure Regulator for Fuel Rail Kit 2008-2021 STI

$380.00
$380.00 - $380.00
$380.00
$380.00 - $380.00

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

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COBB Fuel Rail Line Kit 2008-2021 STI

$595.00
$595.00 - $595.00
$595.00
$595.00 - $595.00

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 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 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 th...

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COBB Tuning Nexgen Stage 2 Redline Carbon Fiber Power Package 2015-2021 STI

$3,603.00
$3,603.00 - $3,603.00
$3,603.00
$3,680.00
$3,680.00 - $3,680.00
$3,680.00

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 Rear Differential to Subframe Mount Bushing Kit 2008-2021 WRX / 2008-2021 STI

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

Description Rear Differential-to-Subframe bushing kit (rear of differential) uses specially formulated Polyurethane which allows mounting of th...

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COBB Rear Sway Bar Mount Reinforcement Kit 2008-2021 WRX / 2008-2021 STI

$155.00
$155.00 - $155.00
$155.00
$155.00 - $155.00

Description This powder coated brace mounts between the lower tab of the rear sway bar bushing mount and the rear inner lower control arm bo...

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COBB Front Control Arm Inner Bushing Kit 2015-2021 WRX / 2011-2021 STI

$270.00
$270.00 - $270.00
$270.00
$270.00 - $270.00

Description The COBB Front Control Arm - Inner Bushing replaces the front control arm rear vertically mounted bushing and features low complian...

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COBB Front Control Arm Inner Bushing Kit 2015-2021 WRX / 2011-2021 STI

$270.00
$270.00 - $270.00
$270.00
$270.00 - $270.00

Description The COBB Front Control Arm Inner Bushing Kit - Kit offers a unique metal and polyurethane hybrid design for demanding applications....

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COBB Alloy Front Lower Complete Control Arm Kit w/ Standard Caster 2015-2021 WRX / 2015-2021 STI

$1,025.00
$1,025.00 - $1,025.00
$1,025.00
$1,025.00 - $1,025.00

Description The COBB Subaru Alloy Front Lower Control Arm, STD Alignment (or Offset Caster) will increase the handling of your WRX to better tha...

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COBB Alloy Front Lower Complete Control Arm Kit w/ Offset Caster 2015-2021 WRX / 2015-2021 STI

$1,025.00
$1,025.00 - $1,025.00
$1,025.00
$1,025.00 - $1,025.00

Description The COBB Subaru Alloy Front Lower Control Arm, Offset Caster (or STD Alignment) will increase the handling of your WRX to better tha...

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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 Brushed Titanium Tip Kit 2011-2026 WRX / 2011-2021 STI

$280.00
$280.00 - $280.00
$280.00
$280.00 - $280.00

Description This Brushed Titanium Tip Kit is compatible with both our Sedan and Hatch Titanium Cat-Back Exhaust systems for 2011+ Subaru WRX an...

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Perrin 16mm Rear Sway Bar 2008-2021 WRX/STI

$245.65
$245.65 - $245.65
$245.65
$289.00
$289.00 - $289.00
$289.00

Add a PERRIN Adjustable Rear Swaybar to your WRX & STI. Adding a swaybar is the easiest way to improve and fine-tune the handling of your vehi...

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Rotora Street Challenge Drilled 2 Piece Front Rotor Pair 2018-2021 STI

$995.00
$995.00 - $995.00
$995.00
$995.00 - $995.00

Here, you are looking at the Rotora Street Challenge 2pc. Front Rotor Pair for your 2018-2021 STI. These rotors are a direct replacement for the OE...

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Rotora Super Challenge Slotted 2 Piece Front Rotor Pair 2018-2021 STI

$895.00
$895.00 - $895.00
$895.00
$895.00 - $895.00

Here, you are looking at the Rotora Street Challenge 2pc. Front Rotor Pair for your 2018-2021 STI. These rotors are a direct replacement for the OE...

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Rotora Big Brake Kit 6/2 Piston Calipers w/ Slotted Rotors 2015-2021 WRX w/ Manual E-Brake

$5,390.00
$5,390.00 - $5,390.00
$5,390.00
$5,390.00 - $5,390.00

Rotora is a worldwide aftermarket designer and manufacturer of high-performance braking systems and brake components including brake calipers, cast...

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P3 Gauges Ethanol Sensor Voltage Adaptor

$100.00
$100.00 - $100.00
$100.00
$100.00 - $100.00

Looking for a simple way to read ethanol content DIRECTLY from your ethanol sensor? Your search stops HERE! Introducing the P3 ESVA P3 Gauges has...

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P3 Gauges Tubing Kit

$40.00
$40.00 - $40.00
$40.00
$40.00 - $40.00

60" of 5/32" O.D. plastic tubing, "T" fitting, connector hoses (5/32" I.D.) and zip ties. Does NOT include boost tap.Can be used as a Plug and play...

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P3 Gauges V3 Hardwire Harness

$30.00
$30.00 - $30.00
$30.00
$30.00 - $30.00

*ONLY COMPATIBLE WITH V3 OBD2 GAUGEThe P3 V3 Hardwire Harness will allow you to connect your V3 gauge to your car without blocking access to your O...

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BC Racing ER Series Coilover Kit 2015-2021 WRX/STI

$1,935.00 - $2,505.00
$1,935.00 - $2,505.00
$1,935.00
$1,935.00 - $2,505.00

These images may not represent your application The BC Racing ER Series Coilover System is the next evolution in your suspension tuning and vehic...

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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!