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2015-2021 WRX STI Mods

FactionFab Front Stainless Steel Brake Lines 2008-2017 STI

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

DESCRIPTION The Faction Fab Front Stainless Steel Brake Lines have been designed to improve your braking response by replacing your factory rubber ...

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FactionFab Rear Stainless Steel Brake Lines 2008-2017 STI

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

DESCRIPTION The Faction Fab Rear Stainless Steel Brake Lines have been designed to improve your braking response by replacing your factory rubber l...

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FactionFab Rear Stainless Steel Brake Lines 2008-2021 WRX

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

DESCRIPTION The Faction Fab Rear Stainless Steel Brake Lines have been designed to improve your braking response by replacing your factory rubber l...

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FactionFab Rear Stainless Steel Brake Line Set 2018-2021 STI

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

These brake lines are direct replacements for your factory brake lines that can warp over time or expand under pressure which can affect your overa...

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FactionFab Front Stainless Steel Brake Lines 2018-2021 STI

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

DESCRIPTION The Faction Fab Front Stainless Steel Brake Lines have been designed to improve your braking response by replacing your factory rubber ...

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FactionFab F-Spec Front Brake Pads 2004-2017 STI

$56.00
$56.00 - $56.00
$56.00
$42.00
$42.00 - $42.00
$42.00

DESCRIPTION The Faction Fab F-Spec Front Brake Pads offer great linear thermal stability with easy pedal modulation and consistent braking performa...

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Perrin Master Cylinder Brace 2015-2021 WRX/STI

$160.00
$160.00 - $160.00
$160.00
$120.00
$120.00 - $120.00
$120.00

The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness and response. REDU...

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Cusco Master Cylinder Brace 2015-2021 WRX/STI

$140.00
$140.00 - $140.00
$140.00
$119.00
$119.00 - $119.00
$119.00

6A1 561 ALHD * USDM / LHD application * Steel Blue Bracket Upon hard braking, the sheet metal of the firewall flexes immensely from hydraulic press...

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GiroDisc Rear Rotor Ring Replacement 2018-2021 STI

$630.00 - $630.00
$630.00
$630.00 - $630.00
$630.00

Need new rings for your Girodisc 2pc rotors? We got them. Rings come complete with all new hardware and full instructions for re-assembly; but if y...

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GiroDisc Front Rotor Ring Replacement 2018-2021 STI

$680.00 - $680.00
$680.00
$680.00 - $680.00
$680.00

Need new rings for your Girodisc 2pc rotors? We got them. Rings come complete with all new hardware and full instructions for re-assembly; but if y...

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GiroDisc 2 Piece Rear Rotors 2018-2021 STI

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

Sold in pair The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car a...

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GiroDisc 2 Piece Front Rotors 2018-2021 STI

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

Sold in pair The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car an...

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DBA 5000 Series T3 Front Rotor 2015-2021 WRX

$664.37
$664.37 - $664.37
$664.37
$465.06
$465.06 - $465.06
$465.06

Price is per rotor  'T3 Slot 48 precision CNC machined slots'Tri-Symmetrical curve slots dampens the vibration harmonics or noise. A quieter, respo...

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DBA 5000 Series T3 Front Rotor 2018-2021 STI

$763.88
$763.88 - $763.88
$763.88
$534.72
$534.72 - $534.72
$534.72

Price is per rotor 'T3 Slot 48 precision CNC machined slots'Tri-Symmetrical curve slots dampens the vibration harmonics or noise. A quieter, respon...

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APR Carbon Fiber Brake Cooling Ducts 2015-2017 WRX/STI

$615.00
$615.00 - $615.00
$615.00
$522.75
$522.75 - $522.75
$522.75

The APR Brake Cooling Ducts are aerodynamically-optimized to "funnel in" massive amounts of air. Also known as the venturi effect, when the vehicle...

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APR Brake Rotor Backing Plates w/ Hose 2015-2021 STI

$469.00
$469.00 - $469.00
$469.00
$398.65
$398.65 - $398.65
$398.65

Excessive heat can cause major and expensive damage to critical components in a car. Engine bays, radiators, brakes, transmissions, and differentia...

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APR Brake Rotor Backing Plates 2015-2021 STI

$346.00
$346.00 - $346.00
$346.00
$294.10
$294.10 - $294.10
$294.10

Excessive heat can cause major and expensive damage to critical components in a car. Engine bays, radiators, brakes, transmissions, and differentia...

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APR Brake Cooling Kit 2015-2017 STI

$963.00
$963.00 - $963.00
$963.00
$818.55
$818.55 - $818.55
$818.55

The APR Brake Cooling Ducts are aerodynamically-optimized to "funnel in" massive amounts of air. Also known as the venturi effect, when the vehicle...

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APR Brake Cooling Kit 2018-2021 STI

$1,021.00
$1,021.00 - $1,021.00
$1,021.00
$867.85
$867.85 - $867.85
$867.85

The APR Brake Cooling Ducts are aerodynamically-optimized to "funnel in" massive amounts of air. Also known as the venturi effect, when the vehicle...

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APR Brake Cooling Ducts 2018-2021 WRX/STI

$673.00
$673.00 - $673.00
$673.00
$572.05
$572.05 - $572.05
$572.05

The APR Brake Cooling Ducts are aerodynamically-optimized to "funnel in" massive amounts of air. Also known as the venturi effect, when the vehicle...

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Brembo Front 4 Piston 328mm Race Brakes 2005-2021 STI

$4,395.00 - $4,395.00
$4,395.00
$4,395.00 - $4,395.00
$4,395.00

NASA, SCCA, POC, PCA, Time Attack For popular track oriented cars which meet or exceeds the requirements of numerous sanctioning bodies such as SCC...

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Radium Master Cylinder Brace 2015-2021 WRX/STI

$99.95 - $99.95
$99.95
$99.95 - $99.95
$99.95

This Radium Engineering master cylinder brace is compatible with the left hand drive (LHD) 15-21 Subaru WRX, 15-21 Subaru WRX STi, and 14-18 Forest...

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StopTech Slotted/Drilled Rotor Front Right 2015-2021 WRX

$215.04 - $215.04
$215.04
$215.04 - $215.04
$215.04

The StopTech Slotted/Drilled Rotor provides improved cooling and brake performance for the 2015-2021 WRX. The rotor features slots and drilled hole...

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StopTech Slotted/Drilled Rotor Front Left 2015-2021 WRX

$215.04 - $215.04
$215.04
$215.04 - $215.04
$215.04

The StopTech Slotted/Drilled Rotor provides improved cooling and brake performance for the 2015-2021 WRX. The rotor features slots and drilled hole...

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

$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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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 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 Street 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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DBA 4000 Series Slotted Front Rotor 2015-2021 WRX

$241.33
$241.33 - $241.33
$241.33
$168.93
$168.93 - $168.93
$168.93

Built on the foundations of DBA's T2 slot, the T3 slot design features additional, precise, CNC machined tri-symmetrical slots, resulting in an ...

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DBA 4000 Series Drilled & Slotted Front Rotor 2015-2021 WRX

$258.77
$258.77 - $258.77
$258.77
$181.14
$181.14 - $181.14
$181.14

Cast from XG-150 high carbon alloyed iron and undergoing Thermal Stability Profiling. DBA's metallurgy is able to handle the increased stress an...

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DBA 4000 Series Slotted Rear Rotor 2016-2021 WRX w/ Eyesight

$228.08
$228.08 - $228.08
$228.08
$159.66
$159.66 - $159.66
$159.66

Built on the foundations of DBA's T2 slot, the T3 slot design features additional, precise, CNC machined tri-symmetrical slots, resulting in an ...

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DBA 4000 Series Drilled & Slotted Rear Rotor 2008-2014 WRX / 2015-2021 WRX

$226.46
$226.46 - $226.46
$226.46
$158.52
$158.52 - $158.52
$158.52

Cast from XG-150 high carbon alloyed iron and undergoing Thermal Stability Profiling. DBA's metallurgy is able to handle the increased stress an...

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DBA 4000 Series Slotted Rear Rotor 2008-2014 WRX / 2015-2021 WRX

$208.88
$208.88 - $208.88
$208.88
$146.22
$146.22 - $146.22
$146.22

Built on the foundations of DBA's T2 slot, the T3 slot design features additional, precise, CNC machined tri-symmetrical slots, resulting in ...

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DBA Street Series Slotted Front Rotor 2015-2021 WRX

$170.76
$170.76 - $170.76
$170.76
$119.53
$119.53 - $119.53
$119.53

The T2 slot design features precise CNC machined bi-symmetrical slots, resulting in a quieter, more responsive and smoother brake pedal feel. Th...

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DBA Street Series Slotted Rear Rotor 2016-2021 WRX w/ Eyesight

$183.60
$183.60 - $183.60
$183.60
$128.52
$128.52 - $128.52
$128.52

The T2 slot design features precise CNC machined bi-symmetrical slots, resulting in a quieter, more responsive and smoother brake pedal feel. Th...

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DBA Street Series Drilled & Slotted Front Rotor 2015-2021 WRX

$179.28
$179.28 - $179.28
$179.28
$125.50
$125.50 - $125.50
$125.50

DBA's Street Series rotors feature: Kangaroo Paw ventilation-144 diamond and tear drop pillar ventilation system increases surface area resultin...

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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!