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2015-2021 WRX STI Mods

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FactionFab Shifter Bushing Combo 6 Speed 2004-2021 STI

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

DESCRIPTION The Faction Fab Shifter Bushing Combination includes new shifter bushings, along with a new rear shifter bushing. These bushings have b...

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Perrin Clutch Line 2015-2021 WRX/STI

$66.00
$66.00 - $66.00
$66.00
$49.50
$49.50 - $49.50
$49.50

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Perrin Barrel Shift Knob 2015+ WRX / 2004-2021 STI

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

Compatiblity 2013-2016 Scion FRS 2016+ Toyota 86 2015+ WRX 2013+ BRZ 2004-2021 STI

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Perrin Ball Shift Knob 2015+ WRX / 2004-2021 STI

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

Compatiblity 2013-2016 Scion FRS 2016+ Toyota 86 2015+ WRX 2013+ BRZ 2004-2021 STI

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Cusco Braided Stainless Steel Clutch Line 2015-2021 WRX/STI

$125.00
$125.00 - $125.00
$125.00
$106.25
$106.25 - $106.25
$106.25

672 022 CL Using aircraft-grade PTFE stainless, Teflon-inner lined hose, we’ve achieved a design that not only provide performance but also longevi...

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Cusco Single Clutch System 2004-2021 STI

$1,850.00
$1,850.00 - $1,850.00
$1,850.00
$1,572.50
$1,572.50 - $1,572.50
$1,572.50

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

$2,600.00
$2,600.00 - $2,600.00
$2,600.00
$2,210.00
$2,210.00 - $2,210.00
$2,210.00

* 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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Cusco Twin Disc Clutch System Copper 2004-2021 STI

$2,700.00
$2,700.00 - $2,700.00
$2,700.00
$2,295.00
$2,295.00 - $2,295.00
$2,295.00

667 022 CP * 10800 N/f (1100 Kg/f) Copper disc has unique frictional-temperature characteristics where the frictional properties remains unchanged ...

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Cusco Increased Capacity Rear Differential Cover 2004-2021 STI

$995.00
$995.00 - $995.00
$995.00
$845.75
$845.75 - $845.75
$845.75

* Need following OE parts for installation : Air Breather Cap - 38354AA020 x 1 pc Gasket - 38353aa050 x 1 pc Gasket (Only for T-type H3 / H4 Oil se...

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Cusco Reinforced Differential Carrier 2015+ WRX / 2008-2021 STI

$185.00
$185.00 - $185.00
$185.00
$157.25
$157.25 - $157.25
$157.25

* Pre-installed heavy-duty rubber bushings * Boxed steel construction Eliminate unwanted rear differential carrier movement for maximize direct tra...

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Exedy Stage 3 Hyper Single Metallic Disc Clutch Kit 2004-2021 STI

$1,410.02
$1,410.02 - $1,410.02
$1,410.02
$1,198.52
$1,198.52 - $1,198.52
$1,198.52

Here, you are looking at the Exedy Stage 3 Hyper Single Metallic Disc Clutch Kit. This clutch has a higher torque capacity rating over OEM to suppo...

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

$2,332.40
$2,332.40 - $2,332.40
$2,332.40
$1,982.54
$1,982.54 - $1,982.54
$1,982.54

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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Exedy Stage 5 Triple Metallic Disc Clutch Kit 2004-2021 STI

$3,345.85
$3,345.85 - $3,345.85
$3,345.85
$2,843.97
$2,843.97 - $2,843.97
$2,843.97

Here, you are looking at the Exedy Stage 5 Triple Metallic Disc Clutch Kit for the 04+ Subaru STI. This clutch is ideal for those who are making bi...

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Boomba Short Throw Shifter 2015+ WRX

$240.35 - $240.35
$240.35
$240.35 - $240.35
$240.35

This short shift lever is built for performance without compromising comfort. It installs easily, replacing the OEM shift lever on your Subaru WRX ...

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ACT Heavy Duty 6-Puck Disc Clutch Kit 2006-2021 WRX

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

SB5-HDG6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp...

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ACT Heavy Duty Performance Street Disc Clutch Kit w/ Flywheel 2006-2021 WRX

$1,204.00 - $1,204.00
$1,204.00
$1,204.00 - $1,204.00
$1,204.00

SB11-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diap...

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ACT Heavy Duty Race 6 Pad Clutch Kit 2006-2021 WRX

$954.00 - $954.00
$954.00
$954.00 - $954.00
$954.00

SB5-HDR6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp...

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ACT Heavy Duty Race 6 Puck Clutch Kit w/ Flywheel 2006-2021 WRX

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

SB11-HDG6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

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ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 2006-2021 WRX

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

SB11-HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

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ACT Heavy Duty Race Rigid 6 Puck Clutch Kit w/ Flywheel 2006-2021 WRX

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

SB11-HDR6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit w/ Flywheel 2006-2021 WRX

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

SB11-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

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ACT Monoloc Collar 2002-2021 WRX / 2004-2021 STI

$85.00 - $85.00
$85.00
$85.00 - $85.00
$85.00

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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ACT Pilot Bearing 2013-2021 WRX/STI

$7.00 - $7.00
$7.00
$7.00 - $7.00
$7.00

PB1004 is a high quality replacement bushing or bearing that is placed in the end of the crankshaft or in the center of the flywheel, depending on ...

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ACT ProLite Flywheel 2006-2017 WRX

$392.00 - $392.00
$392.00
$392.00 - $392.00
$392.00

600475 is a Prolite flywheel, which is ACT's lighter flywheel offering with lowest inertia. Prolite flywheels are designed for best throttle respon...

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ACT StreetLite Flywheel 2006-2017 WRX

$373.00 - $373.00
$373.00
$373.00 - $373.00
$373.00

ACT flywheels are lighter, stronger and safer than stock cast flywheels to meet the needs of both enthusiast and hard core racer. Material is prope...

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ACT XACT Flywheel StreetLite 2006-2021 WRX

$384.00 - $384.00
$384.00
$384.00 - $384.00
$384.00

ACT flywheels are lighter, stronger and safer than stock cast flywheels to meet the needs of both enthusiast and hard core racer. Material is prope...

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ACT Xtreme Duty Performance Street 6 Puck Clutch Kit w/ Flywheel 2006-2021 WRX

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

Recommended for high horsepower street or race use Moderate to heavy pedal effort, aggressive engagement, OE to mild gear rattle Rated at 650 ft/lb...

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ACT Xtreme Duty Performance Street Disc Clutch Kit w/ Flywheel 2006-2021 WRX

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

SB11-XTSS kit features an Xtreme pressure plate for the most demanding driver. ACT Xtreme pressure plates use exclusive diaphragm design to increas...

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ACT Xtreme Race Rigid 4 Pad Clutch Kit w/ Flywheel 2006-2021 WRX

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

SB11-XTR4 kit features an Xtreme pressure plate for the most demanding driver. ACT Xtreme pressure plates use exclusive diaphragm design to increas...

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ACT Xtreme Race Rigid 6 Pad Clutch Kit w/ Flywheel 2006-2021 WRX

$1,248.00 - $1,248.00
$1,248.00
$1,248.00 - $1,248.00
$1,248.00

SB11-XTR6 kit features an Xtreme pressure plate for the most demanding driver. ACT Xtreme pressure plates use exclusive diaphragm design to increas...

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ACT Xtreme Race Sprung 4 Pad Clutch Kit w/ Flywheel 2006-2021 WRX

$1,277.00 - $1,277.00
$1,277.00
$1,277.00 - $1,277.00
$1,277.00

SB11-XTG4 kit features an Xtreme pressure plate for the most demanding driver. ACT Xtreme pressure plates use exclusive diaphragm design to increas...

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ACT Street Sprung Replacement Clutch Disc 2006-2021 WRX

$181.00 - $181.00
$181.00
$181.00 - $181.00
$181.00

Performance Street Sprung disc type Friction surface diameter: 9.4" Organic disc material Smooth engagement Recommended for street and race use So...

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ACT Heavy Duty Pressure Plate 2006-2021 WRX

$514.00 - $514.00
$514.00
$514.00 - $514.00
$514.00

Designed to work with the ACT Clutch Kits Four-stage heat-treated diaphragm spring 50% increase in clamp load Ductile iron faces provide the fines...

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ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 2006-2017 WRX

$916.00 - $916.00
$916.00
$916.00 - $916.00
$916.00

SB5-HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp...

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ACT Heavy Duty Race Sprung 4 Pad Clutch Kit 2006-2017 WRX

$971.00 - $971.00
$971.00
$971.00 - $971.00
$971.00

SB5-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp...

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

$1,477.59
$1,477.59 - $1,477.59
$1,477.59
$1,329.83
$1,329.83 - $1,329.83
$1,329.83

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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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!