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2015-2021 WRX & STI Mods

GrimmSpeed 6-Speed Shifter Bushing Kit 2004-2021 STI

$49.00
$49.00 - $49.00
$49.00
$49.00 - $49.00

The GrimmSpeed 6-Speed STI Shifter Bushing Kit replaces the factory rubber shifter bushings with higher durability polyurethane components designed...

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Grimmspeed Raw Stainless Steel Classic Shift Knob 2002+ WRX / 2004-2021 STI

$65.00
$65.00 - $65.00
$65.00
$65.00 - $65.00

DESCRIPTION The GrimmSpeed Raw Stainless Steel Classic Shift Knob is a great way to add looks and styling to the interior of your vehicle while pro...

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Perrin Barrel Shift Knob 2015-2026 WRX

$87.75
$87.75 - $87.75
$87.75
$117.00
$117.00 - $117.00
$117.00

Throw Your Weight Around The PERRIN shift knob features a heavyweight, solid steel body that is up to two times the weight of the OEM knob. Heav...

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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
$2,449.00
$2,449.00 - $2,449.00
$2,449.00

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

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COBB Shift Knob Trim Rings 2002-2026 WRX / 2004-2021 STI

$10.00
$10.00 - $10.00
$10.00
$10.00 - $10.00

Description Add a touch of color to your car's interior with our custom colored COBB Knob Trim Rings. Available in the following colors:Blue Gol...

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AMS Performance Billet Shift Knob 2015-2026 WRX / 2004-2021 STI

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

The AMS Performance Subaru WRX/STI 6-Speed Billet Shift Knob was designed for versatility and to aid in shifter feel while rowing gears. Made from ...

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Grimmspeed Raw Stainless Steel Stubby Shift Knob 2002+ WRX / 2004-2021 STI

$65.00
$65.00 - $65.00
$65.00
$65.00 - $65.00

DESCRIPTION The GrimmSpeed Raw Stainless Steel Stubby Shift Knob is a great way to add looks and styling to the interior of your vehicle while prov...

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COBB Tuning Shift Plate 2015-2026 WRX

$120.00
$120.00 - $120.00
$120.00
$120.00 - $120.00

DESCRIPTION The COBB Shift Plate for your 2015+ Subaru WRX is designed to reduce overall shift throw while maintaining an OEM-like feel. Two adju...

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ACT Monoloc Collar 2002-2005 WRX / 2004-2017 STI

$85.00
$85.00 - $85.00
$85.00
$105.00
$105.00 - $105.00
$105.00

SPECS: Patent-pending design  Chromoly-steel construction Makes for a great upgrade to the traditional two-piece wedge collar and wire ring design...

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OVERTAKE ModKnob Tall Weighted Delrin Shift Knob 2008-2026 WRX / 2004-2021 STI

$89.00
$89.00 - $89.00
$89.00
$89.00 - $89.00

The Best of Both Worlds | Overtake ModKnob Weighted Delrin Shift Knobs We all love a good weighted shift knob for the smooth and direct feel they o...

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Perrin Driveshaft Carrier Bushings 2002-2026 WRX / 2004-2021 STI

$35.25
$35.25 - $35.25
$35.25
$47.00
$47.00 - $47.00
$47.00

DESCRIPTION The Perrin Driveshaft Carrier Bushings replace the soft OEM rubber bushings that mount the driveshaft carrier bearing to the chassis. U...

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COBB Tuning White 6-Speed Weighted Knob 2015-2026 WRX / 2004-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

Description The Weighted COBB Knob is designed to keep those extended shifting sessions exhilarating. The billet stainless steel base/insert prov...

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OVERTAKE Driveshaft Carrier Bushings 2002-2026 WRX / 2004-2021 STI

$39.00
$39.00 - $39.00
$39.00
$39.00 - $39.00

Your driveshaft is only as stable as the bushings holding it in place. And factory rubber wasn't built to last. The OEM driveshaft carrier bushings...

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OVERTAKE Transmission Crossmember Bushing Kit 2008-2026 WRX / 2008-2021 STI

$50.00
$50.00 - $50.00
$50.00
$50.00 - $50.00

Every gear change should feel deliberate, connected, and precise. So why does the factory leave so much on the table? Your transmission is mounted ...

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ACT XACT StreetLite Flywheel 2004-2021 STI

$476.00
$476.00 - $476.00
$476.00
$588.00
$588.00 - $588.00
$588.00

DESCRIPTION The ACT Streetlite Flywheel for the 2004-2021 STI is a lightweight, one-piece forged flywheel designed to improve engine response and a...

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Perrin Driveshaft Lockdown Kit 2008+ WRX / 2008-2021 STI

$114.00
$114.00 - $114.00
$114.00
$152.00
$152.00 - $152.00
$152.00

DESCRIPTION The PERRIN Driveshaft Lockdown Kit is designed to replace the OEM rubber bushings that allow unwanted driveshaft movement under hard ac...

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BilletWorkz Matte Black Short Shifter 2015+ WRX

$220.00
$220.00 - $220.00
$220.00
$220.00 - $220.00

This is the BilletWorkz Short Throw Shifter that has been designed to fit the 15-22 WRX, as well as the 18+ Crosstrek. The shifter throws will be r...

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COBB Tuning Stage 1+ Drivetrain Package 2015+ WRX

$285.00
$285.00 - $285.00
$285.00
$285.00 - $285.00

DESCRIPTION The Stage 1+ Drivetrain Package for your 2015+ Subaru WRX includes the Shift Plate, Shifter Bushing, and Shifter Stop, and the covete...

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FactionFab Rear Shifter Bushing 2002-2014 WRX / 2004-2021 STI

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

DESCRIPTION The FactionFab Rear Shifter Bushing is an an upgraded mount crafted from durable urethane materials. It's a direct replacement for the ...

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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 ...

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

$954.54
$954.54 - $954.54
$954.54
$984.06
$984.06 - $984.06
$984.06

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...

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

$1,193.03
$1,193.03 - $1,193.03
$1,193.03
$1,229.93
$1,229.93 - $1,229.93
$1,229.93

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...

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

$2,496.45
$2,496.45 - $2,496.45
$2,496.45
$2,937.07
$2,937.07 - $2,937.07
$2,937.07

Here, you are looking at the Exedy Stage 4 Heavy Duty Twin Metallic Disc Clutch Kit. This particular clutch is ideal for those who are making big h...

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OVERTAKE Clutch Delay Valve Delete 2006-2026 WRX / 2006-2021 STI

$39.00
$39.00 - $39.00
$39.00
$39.00 - $39.00

Greatly Improves Clutch Engagement Point Predictability | OVERTAKE Clutch Delay Valve Delete From the factory, Subaru has included a delay valve in...

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Perrin Steering Dampener Lockdown 2008-2026 WRX

$83.25
$83.25 - $83.25
$83.25
$111.00
$111.00 - $111.00
$111.00

Create a solid connection between your steering wheel and car, and increase positive steering feel with the PERRIN Steering Dampener Lockdown. Why ...

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Perrin Rear Subframe Lockdown Kit 2015-2026 WRX / 2015-2021 STI

$105.75
$105.75 - $105.75
$105.75
$141.00
$141.00 - $141.00
$141.00

The PERRIN Rear Subframe Lockdown Kit reduces drivetrain movement during hard acceleration, braking, and cornering, delivering a more responsive an...

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COBB Tuning White w/ Black Ring 6-Speed Knob 2015-2026 WRX / 2004-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION The COBB Knob is designed to keep those extended shifting sessions exhilarating. The billet aluminum base is anodized in your choice ...

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ACT Heavy Duty Race Sprung 6 Pad Clutch Kit 2006+ WRX / 2004-2021 STI

$1,254.00
$1,254.00 - $1,254.00
$1,254.00
$1,548.00
$1,548.00 - $1,548.00
$1,548.00

DESCRIPTION The ACT Heavy Duty Race Sprung 6 Pad Clutch Kit for the 2006+ WRX is built for high horsepower street and race applications that demand...

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ACT XACT Prolite Clutch Flywheel 2004-2021 STI

$509.00
$509.00 - $509.00
$509.00
$629.00
$629.00 - $629.00
$629.00

DESCRIPTION The ACT XACT Prolite Clutch Flywheel is designed for 2004–2021 Subaru WRX STI models and is ACT’s lightest flywheel option for maximum ...

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ACT Xtreme Performance Street Sprung Clutch 2004-2021 STI

$875.00
$875.00 - $875.00
$875.00
$1,080.00
$1,080.00 - $1,080.00
$1,080.00

DESCRIPTION The ACT Xtreme Performance Street Sprung Clutch for the 2004-2021 STI is designed for high-output builds that still see street use. It ...

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ACT 4 Pad Rigid Race Clutch Disc 2002-2018 WRX

$147.00
$147.00 - $147.00
$147.00
$182.00
$182.00 - $182.00
$182.00

DESCRIPTION The ACT 4 Pad Rigid Race Clutch Disc for 2002–2017 Subaru WRX is engineered for race-only applications where aggressive engagement and ...

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Perrin Shifter Detent Kit 2015-2026 WRX

$33.75
$33.75 - $33.75
$33.75
$45.00
$45.00 - $45.00
$45.00

The PERRIN Shifter Detent Kit is an inexpensive upgrade that adds a crisp and solid feel to gear changes in your manual transmission WRX or STI. Cr...

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GrimmSpeed Red Classic Shift Knob 2002+ WRX / 2004-2021 STI

$75.00
$75.00 - $75.00
$75.00
$75.00 - $75.00

DESCRIPTION The standard GrimmSpeed Shift Knob is one of the most popular in the Subaru aftermarket for a reason. They are the perfect mixture of r...

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Grimmspeed Lightweight Delrin Stubby Shift Knob 2002+ WRX / 2004-2021 STI

$54.00
$54.00 - $54.00
$54.00
$54.00 - $54.00

DESCRIPTION The GrimmSpeed Lightweight Delrin Stubby Shift Knob is a great way to add modern looks and styling to the interior of your vehicle whil...

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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...

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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...

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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!