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2015-2021 WRX STI Mods

Remark 4" Stainless Single Wall Axleback 2015-2021 WRX/STI

$635.00 - $635.00
$635.00
$635.00 - $635.00
$635.00

Direct bolt-on easy installation to the factory OEM or Remark mid Y-pipe (Please note : this product will NOT fit aftermarket exhaust system)

Remark 4" Stainless Double Wall Axleback 2015-2021 WRX/STI

$695.00 - $695.00
$695.00
$695.00 - $695.00
$695.00

Direct bolt-on easy installation to the factory OEM or Remark mid Y-pipe (Please note : this product will NOT fit aftermarket exhaust system)

Remark 4" Burnt Stainless Single Wall Axleback 2015-2021 WRX/STI

$695.00 - $695.00
$695.00
$695.00 - $695.00
$695.00

Direct bolt-on easy installation to the factory OEM or Remark mid Y-pipe (Please note : this product will NOT fit aftermarket exhaust system)

Remark 4" Burnt Stainless Double Wall Axleback 2015-2021 WRX/STI

$755.00 - $755.00
$755.00
$755.00 - $755.00
$755.00

Direct bolt-on easy installation to the factory OEM or Remark mid Y-pipe (Please note : this product will NOT fit aftermarket exhaust system)

Remark Boso Edition Stainless Steel Axleback 2015-2021 WRX/STI

$695.00 - $695.00
$695.00
$695.00 - $695.00
$695.00

They are the outlaws of Japan, and known as the "Violent Speed Gang".The outrageous styling, and designs of their JDM vehicles are very iconic with...

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Remark Boso Edition Burnt Stainless Steel Axleback 2015-2021 WRX/STI

$795.00 - $795.00
$795.00
$795.00 - $795.00
$795.00

They are the outlaws of Japan, and known as the "Violent Speed Gang".The outrageous styling, and designs of their JDM vehicles are very iconic with...

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Remark Boso Edition Burnt Blue Axleback 2015-2021 WRX/STI

$565.00 - $565.00
$565.00
$565.00 - $565.00
$565.00

They are the outlaws of Japan, and known as the "Violent Speed Gang".The outrageous styling, and designs of their JDM vehicles are very iconic with...

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Remark 3.5" Stealth Edition Axleback 2015-2021 WRX/STI

$795.00 - $795.00
$795.00
$795.00 - $795.00
$795.00

Here, you are looking at the Remark Axle-Back Exhaust System. These have been designed to save weight by replacing the heavy factory mufflers, all ...

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Remark Non Resonated Midpipe 2015-2021 WRX/STI

$755.00 - $755.00
$755.00
$755.00 - $755.00
$755.00

This is the Remark Mid Pipe Kit. This mid-pipe has been designed with a larger piping diameter to improve the power, performance, and the turbo res...

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Remark Resonated Midpipe 2015-2021 WRX/STI

$855.00 - $855.00
$855.00
$855.00 - $855.00
$855.00

This is the Remark Mid Pipe Kit. This mid-pipe has been designed with a larger piping diameter to improve the power, performance, and the turbo res...

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Remark 3.5" Stainless Single Wall SPT Axleback 2015-2021 WRX/STI

$455.00 - $455.00
$455.00
$455.00 - $455.00
$455.00

Got an SPT exhaust system on your Subaru WRX/STI VA?  Upgrade with a REMARK Axleback system for your Subaru  SPT WRX/STI VA today! 

Remark 3.5" Stainless Double Wall SPT Axleback 2015-2021 WRX/STI

$495.00 - $495.00
$495.00
$495.00 - $495.00
$495.00

Got an SPT exhaust system on your Subaru WRX/STI VA?  Upgrade with a REMARK Axleback system for your Subaru  SPT WRX/STI VA today! 

Remark 3.5" Burnt Stainless Double Wall SPT Axleback 2015-2021 WRX/STI

$545.00 - $545.00
$545.00
$545.00 - $545.00
$545.00

Got an SPT exhaust system on your Subaru WRX/STI VA?  Upgrade with a REMARK Axleback system for your Subaru  SPT WRX/STI VA today! 

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GrimmSpeed Aftermarket 3" Downpipe to OEM Catback Adapter

$60.00
$60.00 - $60.00
$60.00
$54.00
$54.00 - $54.00
$54.00

DESCRIPTION Exhaust leaks seem to be an all-too-common issue with most modded Subarus. The most guaranteed leak you will get is if you run an after...

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ETS Extreme Non-Resonated Catback Burnt Tips 2015-2021 WRX/STI

$1,295.00 - $1,295.00
$1,295.00
$1,295.00 - $1,295.00
$1,295.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Extreme Non-Resonated Catback Polished Tips 2015-2021 WRX/STI

$1,295.00 - $1,295.00
$1,295.00
$1,295.00 - $1,295.00
$1,295.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Extreme Non-Resonated Catback Stealth Black Tips 2015-2021 WRX/STI

$1,345.00 - $1,345.00
$1,345.00
$1,345.00 - $1,345.00
$1,345.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Extreme Resonated Catback Stealth Black Tips 2015-2021 WRX/STI

$1,445.00 - $1,445.00
$1,445.00
$1,445.00 - $1,445.00
$1,445.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Extreme Resonated Catback Polished Tips 2015-2021 WRX/STI

$1,395.00 - $1,395.00
$1,395.00
$1,395.00 - $1,395.00
$1,395.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Extreme Resonated Catback Burnt Tips 2015-2021 WRX/STI

$1,395.00 - $1,395.00
$1,395.00
$1,395.00 - $1,395.00
$1,395.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Muffled Non-Resonated Polished Tips 2015-2021 WRX/STI

$1,395.00 - $1,395.00
$1,395.00
$1,395.00 - $1,395.00
$1,395.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Muffled Non-Resonated Burnt Tips 2015-2021 WRX/STI

$1,395.00 - $1,395.00
$1,395.00
$1,395.00 - $1,395.00
$1,395.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Muffled Non-Resonated Stealth Black Tips 2015-2021 WRX/STI

$1,445.00 - $1,445.00
$1,445.00
$1,445.00 - $1,445.00
$1,445.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Muffled Resonated Stealth Black Tips 2015-2021 WRX/STI

$1,545.00 - $1,545.00
$1,545.00
$1,545.00 - $1,545.00
$1,545.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Muffled Resonated Polished Tips 2015-2021 WRX/STI

$1,495.00 - $1,495.00
$1,495.00
$1,495.00 - $1,495.00
$1,495.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Muffled Resonated Burnt Tips 2015-2021 WRX/STI

$1,495.00 - $1,495.00
$1,495.00
$1,495.00 - $1,495.00
$1,495.00

The ETS Catback exhaust for the 2015-2021 Subaru WRX and STI is a made at ExtremeTurboSystem's facility in Vancouver, Washington. This exhaust feat...

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ETS Gesi Catted Downpipe 2015-2021 WRX

$1,195.00 - $1,195.00
$1,195.00
$1,195.00 - $1,195.00
$1,195.00

Features: 3.0" 304 Stainless Steel Construction 304 Stainless Steel Flanges CNC Mandrel Bent Direct Factory Replacement Supports over 800whp! Gen ...

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COBB Tuning Titanium 3" Catback Exhaust 2011-2021 WRX/STI

$2,450.00 - $2,450.00
$2,450.00
$2,450.00 - $2,450.00
$2,450.00

DESCRIPTION The COBB Titanium Cat-Back Exhaust is un-matched in build quality, style, and performance. Utilizing Grade 4 titanium tubing, this ca...

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COBB Tuning Silicone 12mm Exhaust Hanger 2011+ WRX / 2008-2021 STI

$15.00 - $15.00
$15.00
$15.00 - $15.00
$15.00

To help reduce excessive exhaust movement that can lead to the occasional rattle or rubbing, we offer highly durable 80A durometer silicone exhaust...

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COBB Tuning 2.5" 2-Bolt Exhaust Gasket

$20.00 - $20.00
$20.00
$20.00 - $20.00
$20.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION COBB Exhaust ga...

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COBB Tuning 3" 2-Bolt Exhaust Gasket

$20.00 - $20.00
$20.00
$20.00 - $20.00
$20.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION COBB Exhaust ga...

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COBB Tuning SS 2" Uppipe 2006-2014 WRX / 2004-2021 STI

$275.00 - $275.00
$275.00
$275.00 - $275.00
$275.00

Emissions 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...

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COBB Tuning Brushed Titanium Tip Kit 2011+ WRX / 2011-2021 STI

$280.00 - $280.00
$280.00
$280.00 - $280.00
$280.00

DESCRIPTION This Brushed Titanium Tip Kit is compatible with both our Sedan and Hatch Titanium Cat-Back Exhaust systems for 2011+ Subaru WRX and ...

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COBB Tuning Blued Titanium Tip Kit 2011+ WRX / 2011-2021 STI

$280.00 - $280.00
$280.00
$280.00 - $280.00
$280.00

DESCRIPTION This Blued Titanium Tip Kit is compatible with both our Sedan and Hatch Titanium Cat-Back Exhaust systems for 2011+ Subaru WRX and ST...

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GrimmSpeed 12mm Two Position Exhaust Hanger 2008-2021 WRX / STI

$14.00
$14.00 - $14.00
$14.00
$12.60
$12.60 - $12.60
$12.60

DESCRIPTION Aftermarket exhaust systems are often larger in diameter than factory systems. As a result, they have a tighter fit below your car. Wit...

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GrimmSpeed 12mm Two Position Exhaust Hanger Set 2008-2021 WRX/STI

$42.00
$42.00 - $42.00
$42.00
$37.80
$37.80 - $37.80
$37.80

DESCRIPTION Aftermarket exhaust systems are often larger in diameter than factory systems. As a result, they have a tighter fit below your car. Wit...

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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!