Best Exhaust for Subaru Rumble

Best Exhaust for Subaru Rumble
Photo courtesy slgckgc via flickr. Used under a CC BY 2.0 license.

Question: My Subie WRX STI needs a louder, deeper sounding aftermarket cat back full exhaust. What is the best exhaust for Subaru rumble?

Find the best aftermarket exhaust for Subies on Amazon.

Top 8 exhausts for Subies

AWE Tuning Track Edition catback exhaust

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AWE offers a full catilytic convertor back exhaust system for Subies. The AWE system fits the car perfectly. Installation is a breeze. The sound makes the Subaru rumble. The muffler has a throaty sound but is not obnoxious loud.

Borla cat back exhaust


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Borla makes some of the best exhaust systems to get the Subaru rumble and other domestic and imported cars. Borla’s muffler and pipe system has a nice idle but sounds amazing when stepping on the loud pedal. There is no cabin drone when cruising down the highway.

CNT V3 axleback exhaust

CNT V3 Axleback exhaust with muffler for 2015-2019 Subaru WRX 2015-2018 STI with 4 inch silver tips
  • The CNT Racing V3 Axle-back with muffler exhaust for the 15-19 WRX and 15-18 STI. This is the easiest way to get a little bit more noise and performance out of your WRX or STi.
  • 4 inch silver tips
  • With muffler
  • Will not fit SPT mid pipes Will not fit 2020 up WRX and 2019 Up STI

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The CNT axleback exhaust adds a little more grunt and rumble from your WRX or STI with little work. This system is an axle-back pipe and muffler setup which sounds good. It’s not too loud. It does not drone in the cabin. All in all, this exhaust is perfect for a daily driver.


Invidia HS15STIGM4SS Exhaust System (Back Exhaust2015+ Subaru WRX/Sti Gemini/R400 Single Layer Quad Stainless Steel Tip Cat)
  • The Invidia pipe Offers an alternative to other power-boosting enhancements
  • A quick look at its dyno chart shows it easily added several horse-power units to the stock exhaust system
  • Each Invidia pipe features a large 4-in stainless-steel Bell mount to enhance power by freeing excess gas

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The Invidia exhaust offers a deep rumbling tone on wide open throttle. No rasp. While cruising, the muffler is not that loud. The installation process is easy for one of the best mufflers for boxer engines.

MagnaFlow car back performance exhaust

MagnaFlow Cat-Back Performance Exhaust System 19361 - Competition Series, Stainless Steel 3in Main Piping, Quad Split Rear Exit, Polished Finish 4in Exhaust Tip - WRX/Impreza Performance Exhaust Kit
  • AGGRESSIVE SOUND/COMPETITION SERIES - As the name implies, MagnaFlow performance exhaust systems are engineered for powerful performance and sound. Fast-flowing mandrel bent pipes and smaller, louder, straight-through mufflers allow for less exhaust flow restriction, lighter system weight and a sound meant to be heard on the track. Specifically designed for the 2011-2018 Subaru WRX/Impreza
  • CAT-BACK PERFORMANCE - Extensive testing and dyno-proven power make this exhaust truly developed for the driven. It is designed to replace the original exhaust components following the catalytic converter. These systems are 50-state legal and designed to optimize power based on the factory calibration
  • BOLT-ON INSTALLATION - MagnaFlow utilizes state-of-the-art 3D scanning technology during the research and development process to ensure that this exhaust system will fit AND outperform the original equipment
  • STAINLESS STEEL CONSTRUCTION - Highly corrosion resistant, stainless steel construction incorporating CNC precision robotic manufacturing for quality fitment and longevity. Built to be the exhaust that lasts the lifetime of your vehicle
  • LIMITED LIFETIME CONSTRUCTION WARRANTY - Performance that lasts. Enjoy worry-free ownership knowing that you're backed by MagnaFlow’s limited lifetime construction warranty

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The MagnaFlow exhaust is a quality system made of stainless steel. The muffler and pipe system is a bolt on installation that fits WRX and Imprezzas quickly and easily. The sound tone is good. Magnaflow makes it easy to get the Subaru rumble with an exhaust upgrade.

SRS Quad

SRS Quad Axleback Exhaust Compatible/Replacement for 2015-2021 Subaru WRX STI
  • Compatible/Replacement for 2015-2021 Subaru WRX/STI
  • Direct bolt on design
  • Full T-304 Stainless Steel
  • Mandrel bent tubing
  • Japan design (Does not Works with SPT Exhaust)

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SRS Quad axleback exhaust offers the WRX rumble.


Spec-D Tuning 2.5" S/S Quad Tip Catback Exhaust System Compatible with 2008-2014 Subaru Impreza WRX Sti Sedan
  • ✔️ All of Our Items are 100% In Original Packaging! You Will Never Receive a Used Item From Us!
  • ✔️ Items are Exactly the Same as Shown in the Images! You Will Receive the Exact Item You Purchased!
  • ✔️ Installation Made Easy on All of Our Items! Little to No Modifications needed at Best!
  • ✔️ 30 Days Refund & 90 Days Defective Item Replacement Warranty! Any Issues With Your Item Please Call/Email Us and We Will Help You!
  • ✔️ FITMENT: Compatible with Subaru Impreza WRX/STI sedan 2008-2014 models only.

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The Spec-D system sounds great. At idle, the muffler is quiet. At WOT, it makes a nice rumble.


TurboXS WS02-RMA Exhaust Muffler Assembly for Subaru WRX STI, Rear
  • Tip: 4in
  • Piping: 3in
  • Tip Style: Single Polished Stainless

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The TurboXS is an axleback exhaust system for Subaru WRX STI cars. It sounds good.

What makes Subarus rumble aka how can I make my Subaru louder?

A less restrictive muffler with a straight through design will make your Subaru have a deeper sound.

Modern axle back and cat back exhaust for the Suburu WRX STI offer a free flowing muffler and pipes, which may increase horsepower if tuned.

Best exhaust for Subaru Impreza WRX

Whether you want a cheap exhaust upgrade, there are options for you with axle-back exhaust systems. More expensive aftermarket cat back exhaust do have benefits. One of the pros is they are all designed to work together and create an aggressive sound on acceleration and minimal to no interior cabin drone.

Find the best exhaust for Subaru rumble on Amazon.

Originally posted 2022-09-17 16:58:18.