2019+ 2.5L Mazda 3 Cat Back Exhaust System

Introducing the CorkSport Cat Back Exhaust for 2019+ Mazda 3. Add some much-needed sound to the 4th GEN 3 and improve performance! The CS cat back exhaust replaces everything from the header back with 63.5mm fully polished, mandrel bent, stainless steel piping. It's a step up in volume and aggressiveness from the CorkSport axle back exhaust, without adding annoying drone or raspy tones.

Read The BlogAxle Back Exhaust for 2019+ Mazda 3 & CX-30!

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2019 Mazda 3 turbo and non turbo axle back exhaust

2019 Mazda 3 turbo and non turbo mid exhaust video clip

The CorkSport Advantage

stainless steel mazda 3 cat back exhaust

Sound Boost:

The CorkSport cat back exhaust completely replaces the OEM midpipes and restrictive OEM muffler section with 63.5mm mandrel bent pipe and pass-thru resonators. The larger pipe adds a great sound and tone for the backroads while the high-flowing resonators control drone so your car is still comfortable on the daily commute! We tested multiple resonator setups in both the axle back and midpipe sections and found that the asymmetric axle back design and large oval resonator in the midpipe results in the absolute best combination of tone, volume, and drone control for your MZ3.

mazda 3 cat back exhaust gives horsepower gains

Horsepower Gains - Non-Turbo:

What good is sound without a little power to go with it? Installing the CorkSport Cat-Back Exhaust (with the CorkSport Short Ram Intake previously installed) netted us approximately 20wTQ and 10-18wHP. You can see significant gains from 2700rpm through the rpm range til redline at 6200rpm. Note: AWD Turbo model has not been tested.

OEM Fitment:

Each CS cat back exhaust system was designed from the ground up to fit just like your OEM exhaust system. We offer two different midpipe setups for great fitment, no matter if your vehicle is AWD or FWD. Don’t worry though, both use the same resonator design so you know your car will sound great, regardless of your drivetrain!

2019+ Mazda3 exhaust catalyst back system

Cylinder Deactivation:

If your Mazda 3 is equipped with cylinder deactivation don’t be worried because we have a solution for you. Utilizing a bracket made out of 304 stainless steel, you can mount your cylinder deactivation motor securely out of the way to ensure no check engine lights are set and also reduce the restriction caused by the factory internal valve.

Gen 4 2019+ Mazda 3 cat back exhaust system

Personalized Appearance:

The Mazda 3 catback exhaust system comes with your choice of exhaust tip option. We have fitments for the hatch, sedan, and even the hatch with the aero kit! The aero kit option is simply a more aggressive hatch fitment that goes perfectly with the more aggressive OEM Mazda aero kit. If you want a more subdued look, the regular hatch fitment also looks great. To top it off, each tip fitment can be adjusted outward to suit exactly the look you are going for on your Mazda!

BP Mazda 3 Cat Back Exhaust Modification

Materials & Manufacturing:

The CorkSport cat back exhaust is made from fully polished, mandrel bent, 304 stainless steel for a fantastic look that will stand up to the elements and keep your Mazda breathing easy. All joints use TIG welds for long-lasting strength and all hanger locations have extra bracing to ensure a secure exhaust for years to come. Lastly, each exhaust comes with all hardware and gaskets that are needed for installation to keep your Mazda 3 running smoothly!

NVH (noise, vibration and harshness) in the cabin of your vehicle will be increased by the installation of this exhaust. We highly recommend you view the above video to hear the exhaust note inside and outside the vehicle.
Exhaust will fit on vehicles equipped with the turbo engine, however, a larger CS Mazda 3 cat back exhaust is in development specifically for turbo models!

Additional Features

Vehicle Fitment: 2019+ Mazda 3 2.5L Turbo and Non-Turbo FWD & AWD and 2.0L SkyG models.
Designed & Developed in America: Designed, tested, and validated in Vancouver, Washington, in the Pacific Northwest.
CorkSport Service & Support: Receive a 2 year warranty, full color installation instructions, all of the needed installation hardware, and knowledgeable telephone installation support at(360) 260-2675.

How To Install The 2019-up Mazda 3 Exhaust System

It will take you 3 hours to install the Mazda 3 Cat Back Exhaust System with our instructions.

3 Hour Install Time

2/5 Difficulty

2-Year Warranty

No CEL

The cat back exhaust is absolutely amazing. I have it on my 2022 Mazda 3 gx an it sounds fantastic. From 2K to 3K rpm’s it sounds amazing and definitely worth the purchase. The cold start definitely catches you off guard and you really feel it.

Erin Dharmai07/14/2023, 10:53 AM

This exhaust is absolutely amazing. From the sound of it, to the quality of the exhaust. It was so nice I almost didn’t want to install it. The deep non raspy tone of the exhaust is perfect and it doesn’t sound like your regular N/A 4 cylinder. I went with the aero package tips even though I don’t have the aero package because I wanted the tips to stick out a little bit further. I can’t say enough about this exhaust and how well crafted it was.

Matthew Negrete05/03/2022, 12:21 AM

Deeper tone. Louder from inside but not obnoxiously so. No drone. Absolutely love how the exhaust tips extend slightly past my rear bumper

Ben D.04/19/2022, 10:14 AM

this has been an amazing addition to my Turbo 3, great sound, not too loud but loud enough.. love it

Nicholas Bianchini09/15/2021, 08:59 AM

Highly recommend the CorkSport Catback exhaust for the 4th Gen Mazda3. I installed it in my garage in about 3 hours with the rear of the car on ramps and front on jack stands. The instructions are fantastic and the quality of the exhaust is very impressive. My car sounds fantastic and looks good too. My only “complaint” is that the tips are finicky to get aligned and tightened with the clamps. I’d probably suggest taking it to a muffler shop and getting the tips tack welded on so you don’t have to worry about them.

Grayson08/15/2021, 09:54 AM

Write a review

Could it be shipped to China？

Asked by Alex | 10/09/2023, 04:50 AM | 1 answer(s)

Does this fit the SkyX model?

Asked by Lars H | 05/16/2023, 06:09 PM | 1 answer(s)

My Mazda does not have the appearance kit included stock. If I'm looking to upgrade to an appearance kit in the future, can I buy the appearance kit version of the exhaust and use it stock until I buy the appearance kit? Will it still fit?

Asked by Sam Hahaj | 04/23/2023, 03:02 PM | 1 answer(s)

So I know this deletes the secondary CAT, but isn't that illegal in all 50 states? I also know this is for "off-road" use. I live in NJ, and our emissions testing is pretty uptight, would my MZ3 fail the testing? It's probably a yes, but I'd still like to make sure. Wouldn't it also throw a CEL if you remove the secondary CAT, considering there is usually a sensor to detect it? Thanks.

Asked by Kris Wiz | 01/16/2023, 11:52 PM | 1 answer(s)

i don’t know if my car has the appearance kit on it or not, is there a way to tell?

Asked by Cameron Hawk | 10/21/2022, 05:11 PM | 1 answer(s)

Do you support Japanese models? Is it possible to install without problems? 2020 BFPF 2.0L mazda3 sedan

Asked by liprrq | 08/25/2022, 08:05 PM | 1 answer(s)

Do you guys have a decibel reading for the cat back exhaust non turbo?

Asked by Troy | 08/20/2022, 11:01 PM | 1 answer(s)

What is the weight of the Cat back exhaust system?

Asked by D. Brown | 07/31/2022, 06:48 PM | 1 answer(s)

Will this add any pops or crackling to the NA engine

Asked by Nik | 07/23/2022, 03:21 PM | 1 answer(s)

I read that this deletes the cat...but if it's a cat back exhaust, that means the OEM cat is retained?

Asked by PTV | 07/04/2022, 06:27 PM | 1 answer(s)

Smog check friendly?? lol

Asked by Jay | 06/19/2022, 04:23 AM | 1 answer(s)

Bonjour peut-on l'avoir pour la france, combien de frais de port.cdt.

Asked by Ste Ghislain | 03/29/2022, 12:26 PM | 1 answer(s)

Does the vehicle have to be tuned after adding the cat back or axel back exhaust? Does it have to be tuned if you install either exhaust systems plus the intake?

Asked by Joe Chapin | 03/24/2022, 05:53 PM | 1 answer(s)

I have a 2021 Mazda 3 100th Annie. A post a few months ago said that the 80 mm catback exhaust for the 2021 turbo should be out in a few months. Is this going to be available in the next couple weeks? If not, I'm interested in the 63.5 mm option too. What would you recommend?

Asked by Ryan Hartley | 03/01/2022, 09:16 PM | 1 answer(s)

Will is have any effect on passing emissions testing in Virginia?

Asked by Surg | 01/27/2022, 09:24 AM | 1 answer(s)

Package Title indicates, "CAT Back" exhaust... However, the description indicates that this is a "Header-back" exhaust. So. Which is it?

Asked by RJC | 01/12/2022, 07:06 AM | 1 answer(s)

I am looking at buying the catback for my 2021 turbo and was confused on the appearance package. Does this only refer to the rear diffuser portion of the appearance package - or the whole thing with the side skirts! Thank you.

Asked by Sunny Mok | 12/19/2021, 08:11 PM | 1 answer(s)