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

2015-2021 WRX STI Mods

Invidia N1 Exhaust Silencer 101MM

Original price $70.00
Original price $70.00 - Original price $70.00
Original price $70.00
Current price $45.50
$45.50 - $45.50
Current price $45.50

DESCRIPTION The Invidia N1 Exhaust Silencer is a universal 101mm solution designed for Invidia N1 systems, offering a practical way to reduce exhau...

View full details

Invidia N1 Catback Exhaust w/ Bead Blasted Piping Titanium Tip 2015-2021 WRX/STI

Original price $1,390.20
Original price $1,390.20 - Original price $1,390.20
Original price $1,390.20
Current price $903.63
$903.63 - $903.63
Current price $903.63

DESCRIPTION The Invidia N1 Single Exit Cat-Back Exhaust System with Bead Blasted Piping and Titanium Tip is a top-tier upgrade for 2015-2021 Subaru...

View full details

Invidia Catted Downpipe w/ 2 Bungs 2015-2021 WRX CVT

Original price $1,782.20
Original price $1,782.20 - Original price $1,782.20
Original price $1,782.20
Current price $999.00
$999.00 - $999.00
Current price $999.00

DESCRIPTION The Invidia Catted Downpipe with 2 Bungs is precision-engineered to elevate the performance of your 2015-2021 Subaru WRX (CVT). By repl...

View full details

Invidia Catted Downpipe w/ 2 Bungs 2015-2021 WRX

Original price $1,782.20
Original price $1,782.20 - Original price $1,782.20
Original price $1,782.20
Current price $899.00
$899.00 - $899.00
Current price $899.00

DESCRIPTION The Invidia Catted Downpipe with 2 Bungs is a game-changing upgrade for manual Subaru WRX models from 2015-2021. Designed to replace th...

View full details

MBRP Race 3" Stainless Steel Quad Tip Catback Exhaust 2015-2021 WRX/STI

Original price $934.99 - Original price $934.99
Original price
$934.99
$934.99 - $934.99
Current price $934.99

MBRP® Cat-Back Performance Exhaust for Subaru WRX2.0L, Subaru WRX STI 2.5L Models. 3" Cat-Back, Dual Split Rear Exit, T304 Stainless Steel, RACE Ve...

View full details

MBRP Race 3" Carbon Fiber Quad Tip Catback Exhaust 2015-2021 WRX/STI

Original price $1,049.99 - Original price $1,049.99
Original price
$1,049.99
$1,049.99 - $1,049.99
Current price $1,049.99

MBRP® Cat-Back Performance Exhaust for Subaru WRX2.0L, Subaru WRX STI 2.5L Models. 3" Cat-Back, Dual Split Rear Exit, T304 Stainless Steel, RACE Ve...

View full details

ACT Street Sprung Replacement Clutch Disc 2006-2021 WRX

Original price $181.00 - Original price $181.00
Original price
$181.00
$181.00 - $181.00
Current price $181.00

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

View full details

ACT Heavy Duty Pressure Plate 2006-2021 WRX

Original price $514.00 - Original price $514.00
Original price
$514.00
$514.00 - $514.00
Current price $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...

View full details

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

Original price $916.00 - Original price $916.00
Original price
$916.00
$916.00 - $916.00
Current price $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...

View full details

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

Original price $971.00 - Original price $971.00
Original price
$971.00
$971.00 - $971.00
Current price $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...

View full details

APR Carbon Fiber Hood Vents Narrow

Original price $455.00
Original price $455.00 - Original price $455.00
Original price $455.00
Current price $386.75
$386.75 - $386.75
Current price $386.75

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

View full details

APR GTC-200 Drag Carbon Fiber Rear Spoiler

Original price $1,007.00
Original price $1,007.00 - Original price $1,007.00
Original price $1,007.00
Current price $855.95
$855.95 - $855.95
Current price $855.95

With a height of 5 inches, the GTC-200 Drag wing is designed for cars with low profile roof lines or for those Looking to reduce drag yet maintain ...

View full details

APR GTC-200 Carbon Fiber Rear Spoiler

Original price $1,007.00
Original price $1,007.00 - Original price $1,007.00
Original price $1,007.00
Current price $855.95
$855.95 - $855.95
Current price $855.95

Spanning 60.5 inches and a height of 10 inches, the New GTC-200 adjustable wing offers the perfect amount of downforce for midsize and compact cars...

View full details

APR GTC-200 SCCA Spec Rear Spoiler

Original price $1,170.00
Original price $1,170.00 - Original price $1,170.00
Original price $1,170.00
Current price $994.50
$994.50 - $994.50
Current price $994.50

Spanning 48 inches and a height of 10 inches, the SCCA GTC-200 adjustable wing offers the perfect amount of downforce for midsize and compact cars....

View full details

APR 8mm Wind Splitter Rods

Original price $72.00
Original price $72.00 - Original price $72.00
Original price $72.00
Current price $61.20
$61.20 - $61.20
Current price $61.20

These support rods are used to reinforce the Front Wind Splitter. Comes with a pair of stainless steel support rods. Note: Length 5.5" to 8"

APR Carbon Fiber Front Splitter APR Front Lip 2015-2017 WRX/STI

Original price $599.00
Original price $599.00 - Original price $599.00
Original price $599.00
Current price $509.15
$509.15 - $509.15
Current price $509.15

***Only fits with APR Performance Front Air Dam*** To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra tra...

View full details

APR Carbon Fiber Front Splitter Factory Lip 2015-2017 WRX/STI

Original price $599.00
Original price $599.00 - Original price $599.00
Original price $599.00
Current price $509.15
$509.15 - $509.15
Current price $509.15

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

View full details

APR Carbon Fiber Front Splitter Stock Bumper 2015-2017 WRX/STI

Original price $599.00
Original price $599.00 - Original price $599.00
Original price $599.00
Current price $509.15
$509.15 - $509.15
Current price $509.15

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

View full details

APR Carbon Fiber Front Splitter APR Front Lip 2018-2021 WRX/STI

Original price $653.00
Original price $653.00 - Original price $653.00
Original price $653.00
Current price $555.05
$555.05 - $555.05
Current price $555.05

***Only fits with APR Performance Front Air Dam*** To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra tra...

View full details

APR Carbon Fiber Front Splitter Factory Lip 2018-2021 WRX/STI

Original price $599.00
Original price $599.00 - Original price $599.00
Original price $599.00
Current price $509.15
$509.15 - $509.15
Current price $509.15

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

View full details

APR Carbon Fiber Front Splitter Stock Bumper 2018-2021 WRX/STI

Original price $653.00
Original price $653.00 - Original price $653.00
Original price $653.00
Current price $555.05
$555.05 - $555.05
Current price $555.05

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

View full details

AEM Electronics CD-7LG Carbon Logging Display w/ GPS

Original price $2,362.95
Original price $2,362.95 - Original price $2,362.95
Original price $2,362.95
Current price $1,772.21
$1,772.21 - $1,772.21
Current price $1,772.21

CD-7LG CARBON DIGITAL DASH DISPLAY SPECS: Full color 7" screen with 800x480 resolution Direct sunlight readable (1000cd/m2 brightness and anti-gla...

View full details

AEM X-Series In-Line Wideband AFR Controller

Original price $232.95
Original price $232.95 - Original price $232.95
Original price $232.95
Current price $174.71
$174.71 - $174.71
Current price $174.71

AEM’s X-Series Inline Wideband UEGO Air/Fuel Ratio Controllers are built upon unique, patented, 100% digital technology that makes them the fastest...

View full details

AEM 52mm Oil/Fuel Digital Pressure Gauge

Original price $238.95
Original price $238.95 - Original price $238.95
Original price $238.95
Current price $179.21
$179.21 - $179.21
Current price $179.21

The AEM Digital Fuel Pressure Gauge combines unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays fuel ...

View full details

AEM 340LPH E85 Fuel Pump

Original price $164.95
Original price $164.95 - Original price $164.95
Original price $164.95
Current price $123.71
$123.71 - $123.71
Current price $123.71

AEM’s 340LPH E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

View full details

AEM High Cap Adjustable Fuel Pressure Regulator

Original price $188.95
Original price $188.95 - Original price $188.95
Original price $188.95
Current price $141.71
$141.71 - $141.71
Current price $141.71

AEM's High Cap Universal Adjustable Fuel Pressure Regulator (PN 25-305BK) is the perfect solution for racers who need reliable fuel pressure in hig...

View full details

AEM Digital Wideband AFR Gauge

Original price $224.95
Original price $224.95 - Original price $224.95
Original price $224.95
Current price $168.71
$168.71 - $168.71
Current price $168.71

AEM’s legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one. It unites accuracy, speed a...

View full details

AEM 52mm Digital Boost Gauge -30 to 25psi

Original price $224.95
Original price $224.95 - Original price $224.95
Original price $224.95
Current price $168.71
$168.71 - $168.71
Current price $168.71

AEM's Digital Boost Display Gauges combine unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays boost i...

View full details

AEM 340LPH E85 Fuel Pump

Original price $125.95
Original price $125.95 - Original price $125.95
Original price $125.95
Current price $94.46
$94.46 - $94.46
Current price $94.46

AEM’s 340LPH E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

View full details

AEM Water/Methanol Injection Kit V2 w/ 1 Gallon Tank

Original price $636.95
Original price $636.95 - Original price $636.95
Original price $636.95
Current price $477.71
$477.71 - $477.71
Current price $477.71

THE AEM WATER/METHANOL INJECTION SYSTEM ADVANTAGEWater/methanol injection for forced induction (turbocharged or supercharged) gas-powered race engi...

View full details

AEM 52mm Oil Pressure Gauge 0-152 PSI

Original price $268.95
Original price $268.95 - Original price $268.95
Original price $268.95
Current price $201.71
$201.71 - $201.71
Current price $201.71

AEM Digital Oil Pressure Gauges combine unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays oil pressu...

View full details

AEM X-Series 52mm Oil Pressure Gauge 0-100PSI

Original price $245.95
Original price $245.95 - Original price $245.95
Original price $245.95
Current price $184.46
$184.46 - $184.46
Current price $184.46

AEM’s 30-0301 X-Series 100 PSI/7 BAR Digital Oil/Fuel Pressure gauge combines incredible looks, increased readability and a multitude of new, easy-...

View full details

AEM X-Series 52mm Oil Pressure Gauge 0-150PSI

Original price $293.95
Original price $293.95 - Original price $293.95
Original price $293.95
Current price $220.46
$220.46 - $220.46
Current price $220.46

AEM’s 30-0307 X-Series 150 PSI/10 BAR Digital Oil Pressure gauge combines incredible looks, increased readability and a multitude of new, easy-to-u...

View full details

AEM X-Series Wideband AFR Gauge w/ OBD2 Connectivity

Original price $314.95
Original price $314.95 - Original price $314.95
Original price $314.95
Current price $236.21
$236.21 - $236.21
Current price $236.21

AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source s...

View full details

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

Original price $1,477.59
Original price $1,477.59 - Original price $1,477.59
Original price $1,477.59
Current price $1,329.83
$1,329.83 - $1,329.83
Current price $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...

View full details

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

Original price $987.90
Original price $987.90 - Original price $987.90
Original price $987.90
Current price $889.11
$889.11 - $889.11
Current price $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

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!