Skip to content
CHRISTMAS SAVINGS ARE LIVE!
CHRISTMAS SAVINGS ARE LIVE!

2015-2021 WRX STI Mods

Save 10% Save %

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

$987.90
$987.90 - $987.90
$987.90
$889.11
$889.11 - $889.11
$889.11

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...

View full details
Save 10% Save %

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

$1,054.65
$1,054.65 - $1,054.65
$1,054.65
$949.19
$949.19 - $949.19
$949.19

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...

View full details
Save 10% Save %

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

$1,221.55
$1,221.55 - $1,221.55
$1,221.55
$1,099.39
$1,099.39 - $1,099.39
$1,099.39

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...

View full details
Save 10% Save %

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

$1,033.38
$1,033.38 - $1,033.38
$1,033.38
$930.04
$930.04 - $930.04
$930.04

The South Bend Stage 2 Daily Clutch Kit is the ideal clutch for those of you with basic performance modifications that would otherwise surpass the ...

View full details
Save 10% Save %

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

$1,165.93
$1,165.93 - $1,165.93
$1,165.93
$1,049.34
$1,049.34 - $1,049.34
$1,049.34

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...

View full details
Save 10% Save %

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

$1,302.92
$1,302.92 - $1,302.92
$1,302.92
$1,172.63
$1,172.63 - $1,172.63
$1,172.63

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...

View full details
Save 10% Save %

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

$1,229.93
$1,229.93 - $1,229.93
$1,229.93
$1,106.94
$1,106.94 - $1,106.94
$1,106.94

The South Bend Stage 3 Daily Clutch Kit has been designed for those of you who are making big power and big boost numbers but don't want the harshn...

View full details
Save 10% Save %

South Bend Clutch Stage 2 Daily Clutch Kit 2004-2021 STI

$984.06
$984.06 - $984.06
$984.06
$885.65
$885.65 - $885.65
$885.65

The South Bend Stage 2 Daily Clutch Kit has a 496 ft-lb torque rating which is plenty of clutch for the street, and plenty of clutch for those of y...

View full details

DriveShaft Shop 1-Piece Carbon Fiber Driveshaft 2015-2021 STI

$1,299.98 - $1,299.98
$1,299.98
$1,299.98 - $1,299.98
$1,299.98

The 1-piece carbon fiber driveshaft for the Subaru WRX STI is a complete 2.370" shaft that is approximately 1/2 the weight of the factory 2-piece d...

View full details

Boomba Black Shifter Stop 2015-2021 WRX

$41.80 - $41.80
$41.80
$41.80 - $41.80
$41.80

This billet aluminum shifter stop is CNC machined in house at our facility in Wood Dale, IL. It's designed to drastically reduce shifter play while...

View full details

Boomba Blue Shifter Stop 2015-2021 WRX

$41.80 - $41.80
$41.80
$41.80 - $41.80
$41.80

This billet aluminum shifter stop is CNC machined in house at our facility in Wood Dale, IL. It's designed to drastically reduce shifter play while...

View full details

Boomba Red Shifter Stop 2015-2021 WRX

$41.80 - $41.80
$41.80
$41.80 - $41.80
$41.80

This billet aluminum shifter stop is CNC machined in house at our facility in Wood Dale, IL. It's designed to drastically reduce shifter play while...

View full details

Boomba Natural Aluminum Shifter Stop 2015-2021 WRX

$41.80 - $41.80
$41.80
$41.80 - $41.80
$41.80

This billet aluminum shifter stop is CNC machined in house at our facility in Wood Dale, IL. It's designed to drastically reduce shifter play while...

View full details

Boomba Brass Shifter Bushing 2015-2021 WRX

$27.55 - $27.55
$27.55
$27.55 - $27.55
$27.55

Introducing Boomba Racing's newest product release for the 2015+ Subaru WRX. This brass shifter bushing is meant to replace the OEM rubber bushing ...

View full details

Boomba Short Shift Transmission Adapter Plate 2015-2021 WRX

$131.10 - $131.10
$131.10
$131.10 - $131.10
$131.10

This extremely durable and high quality bracket is constructed out of zinc-plated billet steel. It installs easily and replaces the existing shift ...

View full details
Save 25% Save %

Perrin Transmission Mount 2002+ WRX/STI

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

The PERRIN Performance transmission mount kit reduces drivetrain movement under hard acceleration, deceleration and cornering. WHY DO I WANT STIFFE...

View full details

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

$861.00 - $861.00
$861.00
$861.00 - $861.00
$861.00

SB10-HDG6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

View full details

ACT Heavy Duty Performance Street Disc Clutch Kit 2004-2021 STI

$833.00 - $833.00
$833.00
$833.00 - $833.00
$833.00

SB10-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diap...

View full details

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

$827.00 - $827.00
$827.00
$827.00 - $827.00
$827.00

SB10-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

View full details

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

$2,047.00 - $2,047.00
$2,047.00
$2,047.00 - $2,047.00
$2,047.00

T1R-S07 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction...

View full details

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

$1,929.00 - $1,929.00
$1,929.00
$1,929.00 - $1,929.00
$1,929.00

T1S-S07 Mod-Twin 225 HD Rigid Street Kit blends easy pedal feel, smooth but positive engagement with quick shifting for high powered AWD’s by combi...

View full details

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

$2,104.00 - $2,104.00
$2,104.00
$2,104.00 - $2,104.00
$2,104.00

T1R-S05 Mod-Twin 225 HD Sprung Race Kit performs aggressive launches and smoother shifting in high powered AWD’s by combining twice the ceramic fri...

View full details

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

$1,984.00 - $1,984.00
$1,984.00
$1,984.00 - $1,984.00
$1,984.00

T1R-S05 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction...

View full details

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

$2,047.00 - $2,047.00
$2,047.00
$2,047.00 - $2,047.00
$2,047.00

T2R-S07 Mod-Twin 225 XT Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction...

View full details

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

$1,955.00 - $1,955.00
$1,955.00
$1,955.00 - $1,955.00
$1,955.00

T2S-S07 Mod-Twin 225 XT Rigid Street Kit blends easy pedal feel, smooth but positive engagement with quick shifting for high powered AWD’s by combi...

View full details

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

$2,095.00 - $2,095.00
$2,095.00
$2,095.00 - $2,095.00
$2,095.00

T2R-S05 Mod-Twin 225 XT Sprung Race Kit performs aggressive launches and smoother shifting in high powered AWD’s by combining twice the ceramic fri...

View full details

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

$2,006.00 - $2,006.00
$2,006.00
$2,006.00 - $2,006.00
$2,006.00

T2S-S05 Mod-Twin 225 HD Sprung Street Kit is designed for high powered AWD street cars. It unites uncompromised pedal feel, durability, engagement ...

View full details

DriveShaft Shop Carbon Fiber Driveshaft 2015-2021 WRX

$1,299.98 - $1,299.98
$1,299.98
$1,299.98 - $1,299.98
$1,299.98

The 1-piece driveshaft for the 2015+ Subaru WRX is a complete 2.75″ Carbon Fiber shaft. The 1-piece carbon shaft features larger, replaceable u-joi...

View full details

IAG Spec Competition Clutch Triple Disc & Flywheel Kit 2004-2021 STI

$2,399.99 - $2,399.99
$2,399.99
$2,399.99 - $2,399.99
$2,399.99

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

View full details

IAG EJ 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...

View full details

IAG EJ Street Series Oil Pan Package 2002-2014 WRX / 2004-2021 STI

$799.99 - $799.99
$799.99
$799.99 - $799.99
$799.99

IAG offers our V2 Oil Pickup, Street Series Baffle and Windage Tray combined with our New Oil Pan coated with a black finish as a complete package....

View full details

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

$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99

IAG offers our V2 Oil Pickup, Street Series Baffle and Windage Tray combined with our New Oil Pan as a complete package.About Street Series EJ Oil ...

View full details

IAG EJ Street Series Oil Pan 2002-2014 WRX/ 2004-2021 STI

$569.99 - $569.99
$569.99
$569.99 - $569.99
$569.99

The IAG Street Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track application...

View full details

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

$629.99 - $629.99
$629.99
$629.99 - $629.99
$629.99

The IAG Competition Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track applic...

View full details

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

$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99

The IAG Competition Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track applic...

View full details

AMS Performance Carbon Fiber Shift Knob 2015+ WRX / 2004-2021 STI

$89.95 - $89.95
$89.95
$89.95 - $89.95
$89.95

The AMS Performance WRX/STI Carbon Fiber Shift Knob was designed to extend the length of the shifter which aids in shifting throw and keeps the kno...

View full details

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!