Subaru WRX STI Exhaust System Kits

Your One-Stop Shop For Trusted Subaru WRX STI Exhaust System Kits

If you’re in search of Subaru WRX STI Exhaust System Kits aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 5 Exhaust System Kits from top brands with prices ranging from $22.99 to $1,548.99.

Beyond great prices, we stock trusted brands manufacturing all types of Exhaust System Kits for your Subaru WRX STI. Of the 4 OEM and aftermarket parts brands we carry, some of the most popular are Borla Performance Exhaust, Dorman, and MBRP Exhaust.

And don’t forget to read customer reviews across all Exhaust System Kits categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Exhaust System Kits have to cost top dollar, and we prove it. Browse our top Subaru WRX STI Exhaust System Kits below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Subaru WRX STI Exhaust System Kits

Dorman – Help – Exhaust Manifold Hardware Kit (Part No.32112)

Exhaust Manifold Hardware Kit

from

$22.99
This exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles, and is made from quality materials for reliable performance.

Product Features:
  • Direct replacement – this exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles
  • Ideal solution – this kit is a reliable replacement for the original hardware that is missing or damaged, or has failed
  • Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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MBRP Exhaust – Pro Series, 2.5 In Axle Back System: Polished Tip, 304 Stainless Steel, Designed for Power and Sound (Part No.S4801304)

Pro Series, 2.5 In Axle Back System: Polished Tip, 304 Stainless Steel, Designed for Power and Sound

from

$371.99
MBRP(R) axle back performance exhaust for subaru WRX2.0L, subaru WRX STI 2.5L models. 2.5 Inch axle back, dual split rear exit, T304 stainless steel, street version and single wall T304 exhaust polished tips.

Product Features:
  • Enhanced Sound And Tone Of Boxer Engine
  • T304 Stainless Steel
  • Limited Lifetime Warranty
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MagnaFlow – Competition Series Axle-Back Performance Exhaust System (Part No.19362)

Competition Series Axle-Back Performance Exhaust System

from

$663.99
The MagnaFlow Competition Series Axle-Back Performance Exhaust System 19362 19362 brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we’re so well known for. This exhaust kit is designed to enhance your 2.0L, 2.5L 2011-2018 Subaru with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2in. main piping and 0 Straight-Through mufflers ending in a Quad Split Rear exit with 4in. Polished Welded-On Double Wall Angle Cut Folded Edge tips featuring a sporty finish. The exhaust system’s axle-back layout replaces your ride’s exhaust system from near the rear axle on back. Exhaust system 19362 is engineered to make your vehicle’s engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 19362’s direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow’s limited lifetime warranty. Please check to ensure compliance with local noise regulations.

Product Features:
  • Crafted from 409 stainless steel with all mandrel-bent tubing
  • Increased horsepower and torque
  • Aggressive exterior sound
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Borla Performance Exhaust – T-304 Ss, 3" Pipe Dia To 2.25" Dia, Single Exhaust With Dual Exit (Part No.140595)

T-304 Ss, 3" Pipe Dia To 2.25" Dia, Single Exhaust With Dual Exit

from

$1548.99
BORLA(R) Cat-Back(TM) and Axle-Back multi-core technology is designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow and power, and Precision Computer Controlled CNC Manufacturing Ensures An Accurate Fit.

Product Features:
  • BORLA(R) Cat-Back(TM) Exhausts Feature, Straight Through And Multi-Core Technology To Unleash Hidden Horsepower
  • Each System Is Built From Aircraft Grade High Quality T-304 Stainless Steel
  • Increase The Overall Sound Level And Performance
  • Precision Computer Controlled CNC Manufacturing Ensures An Accurate Fit
  • ATAK(R) Technology Is Based On Specifically-Tuned Attributes Of The Internal Muffler Cores, Which Are Calibrated On A Vehicle-By-Vehicle Basis To Deliver The Mostádesirableásound
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MagnaFlow – Competition Series Cat-Back Performance Exhaust System (Part No.19361)

Competition Series Cat-Back Performance Exhaust System

from

$1264.99
The MagnaFlow Competition Series Cat-Back Performance Exhaust System 19361 19361 brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we’re so well known for. This exhaust kit is designed to enhance your 2.0L, 2.5L 2011-2018 Subaru with dyno-proven performance made possible thanks to fast-flowing mandrel bent 3in. main piping and 1 Straight-Through mufflers ending in a Quad Split Rear exit with 4in. Polished Welded-On Double Wall Angle Cut Folded Edge tips featuring a sporty finish. The exhaust system’s cat-back layout replaces your ride’s exhaust system from near the catalytic converter on back. Exhaust system 19361 is engineered to make your vehicle’s engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 19361’s direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow’s limited lifetime warranty. Please check to ensure compliance with local noise regulations.

Product Features:
  • Crafted from 409 stainless steel with all mandrel-bent tubing
  • Increased horsepower and torque
  • Aggressive exterior sound
See More

Exhaust System Kits Brands You Can Trust For Your Subaru WRX STI

4 trusted brands of Exhaust System Kits line our shelves, ready to help keep your Subaru WRX STI running smooth. Below are some of the most popular brands and their top Exhaust System Kits offerings:

Most Purchased Subaru WRX STI Exhaust System Kits from Dorman – Help

When you buy the most frequently purchased Dorman – Help brand Exhaust System Kits, you can be confident it will be the right part for your Subaru WRX STI. Here are the Dorman – Help Exhaust System Kits Advanced Auto customers buy the most:
Exhaust Manifold Hardware Kit
from $22.99
This product is not rated
Exhaust Manifold Hardware Kit
Exhaust Manifold Hardware Kits
T-304 Ss, 3" Pipe Dia To 2.25" Dia, Single Exhaust With Dual Exit
from $1548.99
This product is not rated
T-304 Ss, 3" Pipe Dia To 2.25" Dia, Single Exhaust With Dual Exit
Exhaust System Kits

FAQs for Subaru WRX STI Exhaust System Kits

What are the most purchased Exhaust System Kits for the Subaru WRX STI?

Out of 5 Exhaust System Kits for the Subaru WRX STI, the most popular in our inventory are:
T-304 Ss, 3" Pipe Dia To 2.25" Dia, Single Exhaust With Dual Exit
from $1548.99
This product is not rated
T-304 Ss, 3" Pipe Dia To 2.25" Dia, Single Exhaust With Dual Exit
Exhaust System Kits
Competition Series Cat-Back Performance Exhaust System
from $1264.99
This product is not rated
Competition Series Cat-Back Performance Exhaust System
Exhaust System Kits