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2015-2021 WRX & STI Mods

ACT Extreme Race Rigid 4 Pad Clutch Kit 2004-2021 STI

Current price $823.00
$823.00 - $823.00
Current price $823.00
Original price $1,016.00
Original price $1,016.00 - Original price $1,016.00
Original price $1,016.00

DESCRIPTION The ACT Extreme Race Rigid 4 Pad Clutch Kit is designed for 2004–2021 Subaru WRX STI models that demand race-ready durability and high ...

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ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 2004-2021 STI

Current price $781.00
$781.00 - $781.00
Current price $781.00
Original price $964.00
Original price $964.00 - Original price $964.00
Original price $964.00

DESCRIPTION The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is designed for 2004–2021 Subaru WRX STI models that need race-ready durability in small...

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ACT Mod-Twin 225 Max Extreme Sprung Race Clutch Kit 2004-2021 STI

Current price $1,925.00
$1,925.00 - $1,925.00
Current price $1,925.00
Original price $2,377.00
Original price $2,377.00 - Original price $2,377.00
Original price $2,377.00

DESCRIPTION The ACT Mod-Twin 225 Max Extreme Sprung Race Clutch Kit is engineered for 2004–2021 Subaru WRX STI models that need high torque capacit...

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ACT Mod-Twin 225 Max Extreme Rigid Race Clutch Kit 2004-2021 STI

Current price $1,878.00
$1,878.00 - $1,878.00
Current price $1,878.00
Original price $2,318.00
Original price $2,318.00 - Original price $2,318.00
Original price $2,318.00

DESCRIPTION The ACT Mod-Twin 225 Max Extreme Rigid Race Clutch Kit is engineered for 2004–2021 Subaru WRX STI models that require maximum torque ca...

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ACT Extreme Race Rigid 6 Pad Clutch Kit 2004-2021 STI

Current price $841.00
$841.00 - $841.00
Current price $841.00
Original price $1,038.00
Original price $1,038.00 - Original price $1,038.00
Original price $1,038.00

DESCRIPTION The ACT Extreme Race Rigid 6 Pad Clutch Kit is designed for 2004–2021 Subaru WRX STI models that demand extreme track performance and t...

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ACT Extreme Race Sprung 6 Pad Clutch Kit 2004-2021 STI

Current price $903.00
$903.00 - $903.00
Current price $903.00
Original price $1,115.00
Original price $1,115.00 - Original price $1,115.00
Original price $1,115.00

DESCRIPTION The ACT Extreme Race Sprung 6 Pad Clutch Kit is built for 2004–2021 Subaru WRX STI models that need extreme torque capacity with manage...

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ACT Heavy Duty Race Rigid 6 Pad Clutch Kit 2004-2021 STI

Current price $799.00
$799.00 - $799.00
Current price $799.00
Original price $986.00
Original price $986.00 - Original price $986.00
Original price $986.00

DESCRIPTION The ACT Heavy Duty Race Rigid 6 Pad Clutch Kit is built for 2004–2021 Subaru WRX STI models that demand track-ready durability and torq...

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South Bend Clutch Stage 3 Daily Clutch Kit 2006-2017 WRX

Current price $1,130.95
$1,130.95 - $1,130.95
Current price $1,130.95
Original price $1,165.93
Original price $1,165.93 - Original price $1,165.93
Original price $1,165.93

This is an excellent clutch for those of you with moderate bolt-ons as this clutch is rated to 400ft-lbs at the crank. The Stage 3 is considered to...

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South Bend Clutch Stage 3 Endurance Clutch Kit 2006-2017 WRX

Current price $1,184.91
$1,184.91 - $1,184.91
Current price $1,184.91
Original price $1,221.55
Original price $1,221.55 - Original price $1,221.55
Original price $1,221.55

Southbend Clutch Kits are considered to be one of the most comfortable high-performance clutch kits on the market due to the OEM-like feel and driv...

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South Bend Clutch Stage 2 Endurance Clutch Kit 2006-2017 WRX

Current price $1,023.01
$1,023.01 - $1,023.01
Current price $1,023.01
Original price $1,054.65
Original price $1,054.65 - Original price $1,054.65
Original price $1,054.65

The South Bend Stage 2 Endurance Clutch Kit is a clutch kit that South Bend had intended for the racing climate. The pressure plate included in thi...

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South Bend Clutch Stage 1 Heavy Duty Clutch Kit 2006-2017 WRX

Current price $958.26
$958.26 - $958.26
Current price $958.26
Original price $987.90
Original price $987.90 - Original price $987.90
Original price $987.90

The South Bend Stage 1 Heavy Duty Clutch Kit is a heavy-duty OEM-like clutch for those of you who want the comfort of the OEM clutch that can handl...

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South Bend Clutch Stage 4 Extreme Clutch Kit 2006-2017 WRX

Current price $1,433.26
$1,433.26 - $1,433.26
Current price $1,433.26
Original price $1,477.59
Original price $1,477.59 - Original price $1,477.59
Original price $1,477.59

The South Bend Stage 4 Extreme Clutch Kit. This clutch kit has been designed for those of you with moderate upgrades and who need the right disc an...

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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit 2006-2018 WRX

Current price $971.00
$971.00 - $971.00
Current price $971.00
Original price $1,199.00
Original price $1,199.00 - Original price $1,199.00
Original price $1,199.00

DESCRIPTION The ACT Heavy Duty Race Sprung 4 Pad Clutch Kit is built for the 2006–2018 Subaru WRX and is designed to handle increased power with fa...

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ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 2006-2018 WRX

Current price $916.00
$916.00 - $916.00
Current price $916.00
Original price $1,131.00
Original price $1,131.00 - Original price $1,131.00
Original price $1,131.00

DESCRIPTION The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is designed for the 2006–2018 Subaru WRX and is built specifically for dedicated race ap...

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ACT Xtreme Race Sprung 4 Pad Clutch Kit w/ Flywheel 2006+ WRX

Current price $1,277.00
$1,277.00 - $1,277.00
Current price $1,277.00
Original price $1,576.00
Original price $1,576.00 - Original price $1,576.00
Original price $1,576.00

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

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ACT Xtreme Race Rigid 6 Pad Clutch Kit w/ Flywheel 2006+ WRX

Current price $1,248.00
$1,248.00 - $1,248.00
Current price $1,248.00
Original price $1,541.00
Original price $1,541.00 - Original price $1,541.00
Original price $1,541.00

DESCRIPTION The ACT Xtreme Race Rigid 6 Pad Clutch Kit with Flywheel is designed for the 2006+ Subaru WRX and is built for the most demanding race ...

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

Current price $1,230.00
$1,230.00 - $1,230.00
Current price $1,230.00
Original price $1,519.00
Original price $1,519.00 - Original price $1,519.00
Original price $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+ WRX

Current price $1,304.00
$1,304.00 - $1,304.00
Current price $1,304.00
Original price $1,610.00
Original price $1,610.00 - Original price $1,610.00
Original price $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 Heavy Duty Race Sprung 4 Pad Clutch Kit w/ Flywheel 2006+ WRX

Current price $1,226.00
$1,226.00 - $1,226.00
Current price $1,226.00
Original price $1,514.00
Original price $1,514.00 - Original price $1,514.00
Original price $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+ WRX

Current price $1,198.00
$1,198.00 - $1,198.00
Current price $1,198.00
Original price $1,479.00
Original price $1,479.00 - Original price $1,479.00
Original price $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+ WRX

Current price $1,180.00
$1,180.00 - $1,180.00
Current price $1,180.00
Original price $1,457.00
Original price $1,457.00 - Original price $1,457.00
Original price $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 6 Puck Clutch Kit w/ Flywheel 2006+ WRX

Current price $1,254.00
$1,254.00 - $1,254.00
Current price $1,254.00
Original price $1,548.00
Original price $1,548.00 - Original price $1,548.00
Original price $1,548.00

DESCRIPTION The ACT Heavy Duty Race 6 Puck Clutch Kit with Flywheel is designed for the 2006+ Subaru WRX and engineered for high horsepower street ...

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

Current price $954.00
$954.00 - $954.00
Current price $954.00
Original price $1,178.00
Original price $1,178.00 - Original price $1,178.00
Original price $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+ WRX

Current price $1,001.00
$1,001.00 - $1,001.00
Current price $1,001.00
Original price $1,236.00
Original price $1,236.00 - Original price $1,236.00
Original price $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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Exedy Stage 4 Twin Metallic Disc Clutch Kit 2004-2021 STI

Current price $2,101.65
$2,101.65 - $2,101.65
Current price $2,101.65
Original price $2,472.59
Original price $2,472.59 - Original price $2,472.59
Original price $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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IAG Spec Competition Clutch Triple Disc & Flywheel Kit 2004-2021 STI

$2,399.99
$2,399.99 - $2,399.99
Current price $2,399.99
Original price $2,399.99 - Original price $2,399.99
Original price

The IAG Spec Competition Clutch Triple Disc Clutch & Flywheel Kit is designed and developed for the 2004-21 Subaru STI 6 speed racing applicati...

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ACT Mod Twin 225 Xtreme Duty Sprung Race Twin Disk Clutch Kit 2004-2021 STI

Current price $2,095.00
$2,095.00 - $2,095.00
Current price $2,095.00
Original price $2,586.00
Original price $2,586.00 - Original price $2,586.00
Original price $2,586.00

DESCRIPTION The ACT Mod Twin 225 Xtreme Duty Sprung Race Twin Disk Clutch Kit for the 2004-2021 STI is built for high-powered AWD applications that...

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ACT Mod Twin 225 Xtreme Duty Rigid Street Twin Disk Clutch Kit 2004-2021 STI

Current price $1,955.00
$1,955.00 - $1,955.00
Current price $1,955.00
Original price $2,413.00
Original price $2,413.00 - Original price $2,413.00
Original price $2,413.00

DESCRIPTION The ACT Mod Twin 225 Xtreme Duty Rigid Street Twin Disk Clutch Kit for the 2004-2021 STI is designed for high-powered AWD street builds...

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ACT Mod Twin 225 Heavy Duty Sprung Race Twin Disk Clutch Kit 2004-2021 STI

Current price $2,104.00
$2,104.00 - $2,104.00
Current price $2,104.00
Original price $2,598.00
Original price $2,598.00 - Original price $2,598.00
Original price $2,598.00

DESCRIPTION The ACT Mod Twin 225 Heavy Duty Sprung Race Twin Disk Clutch Kit for the 2004-2021 STI is engineered for high-powered AWD applications ...

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ACT Mod Twin 225 Heavy Duty Rigid Street Twin Disk Clutch Kit 2004-2021 STI

Current price $1,929.00
$1,929.00 - $1,929.00
Current price $1,929.00
Original price $2,381.00
Original price $2,381.00 - Original price $2,381.00
Original price $2,381.00

DESCRIPTION The ACT Mod Twin 225 Heavy Duty Rigid Street Twin Disk Clutch Kit for the 2004-2021 STI is built for high-powered AWD street and street...

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ACT Mod Twin 225 Heavy Duty Rigid Race Twin Disk Clutch Kit 2004-2021 STI

Current price $2,047.00
$2,047.00 - $2,047.00
Current price $2,047.00
Original price $2,527.00
Original price $2,527.00 - Original price $2,527.00
Original price $2,527.00

DESCRIPTION The ACT Mod Twin 225 Heavy Duty Rigid Race Twin Disk Clutch Kit for the 2004-2021 STI is built for high-powered AWD race applications t...

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ACT Heavy Duty Sprung 4-Puck Disc Clutch Kit 2004-2021 STI

Current price $827.00
$827.00 - $827.00
Current price $827.00
Original price $1,021.00
Original price $1,021.00 - Original price $1,021.00
Original price $1,021.00

DESCRIPTION The ACT Heavy Duty Sprung 4-Puck Disc Clutch Kit for the 2004-2021 STI is designed for high-horsepower street and race applications tha...

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ACT Heavy Duty 6-Puck Disc Clutch Kit 2004-2021 STI

Current price $861.00
$861.00 - $861.00
Current price $861.00
Original price $1,063.00
Original price $1,063.00 - Original price $1,063.00
Original price $1,063.00

DESCRIPTION The ACT Heavy Duty 6-Puck Disc Clutch Kit is engineered for the 2004–2021 Subaru STI and is designed to handle high horsepower street a...

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South Bend Clutch Stage 3 Endurance Clutch Kit 2004-2021 STI

Current price $1,263.83
$1,263.83 - $1,263.83
Current price $1,263.83
Original price $1,302.92
Original price $1,302.92 - Original price $1,302.92
Original price $1,302.92

Southbend Clutch Kits are considered to be one of the most comfortable high-performance clutch kits on the market due to the OEM-like feel and driv...

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Cusco Single Clutch System 2004-2021 STI

Current price $1,665.00
$1,665.00 - $1,665.00
Current price $1,665.00
Original price $1,850.00
Original price $1,850.00 - Original price $1,850.00
Original price $1,850.00

667 022 HP * 11800 N/f (1200 Kg/f) Heavy clutch pedal greatly hinders shifting performance. This is why our clutch systems feature a specially desi...

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Cusco Twin Plate Clutch System 2004-2021 STI

Current price $2,340.00
$2,340.00 - $2,340.00
Current price $2,340.00
Original price $2,600.00
Original price $2,600.00 - Original price $2,600.00
Original price $2,600.00

* 9800 N/f (1000 Kg/f) Used in professional competition, this twin metal unit features great controllability especially during half clutch engageme...

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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!