Gain more horsepower and torque with CorkSport's 2014-2018 Mazda 3 cat back exhaust system for Sedans and Hatchbacks. Create a free-flowing system without restrictions. Our optional polyurethane exhaust hangers give your ride that extra level of detail you're seeking, while better controlling the exhaust movement as you tear up a country road.

Write a review to share your feedback on the enhanced sound of your 2014-2018 Mazda 3 exhaust.

The CorkSport Advantage

Material: T304 stainless steel is used for all the exhaust components for a long-lasting look and corrosion resistance.

Pipe: Polished true 60.5mm, CNC mandrel bent pipe for the best performance and an exact fit.

TIG welded: Precision TIG welding offers long-lasting durability and a lighter weight for the Mazda3 cat-back exhaust.

Additional Features

Pipe: Polished true 65mm, CNC mandrel bent pipe for the best performance and a perfect fit.
Flanges: 7/16-inch thick CNC, laser cut flanges designed and engineered for durability and warping resistance.
Tips: Polished 90mm, dual-wall constructed tip that looks strong and professional with TIG welded badge.
High-flow performance resonator: The straight-through design of the resonator reduces in-cab drone without sacrificing performance. It sounds aggressive, but not obnoxious like other aftermarket exhaust systems.
Performance and Style: Gain around 5 hp for the 2.0L and 10 hp for the 2.5L models while also having a great looking exhaust!
Engineered in the USA: Designed and Engineered in Vancouver, Washington.
Fits all models: Works will both manual and automatic transmission gas powered Mazda 3s.
CorkSport service and support: Includes a 2-year limited warranty, full-color installation instructions, and all necessary gaskets and hardware. We provide knowledgeable telephone support at 360-260-2675.

WARNING: The use of the Mazda 3 Cat-Back exhaust will replace your factory secondary catalytic converter. No Check Engine Lights (CEL) will be thrown, but removing the catalytic converter can be illegal, check with your local emissions authorities."

How To Install A CorkSport 2014+ Mazda 3 Cat-Back Exhaust for Sedans and Hatchbacks

It will take you two hours to install the CorkSport Mazda3 Exhaust with our easy-to-use instructions.

2 Hour Install

3/5 Difficulty

2-Year Warranty

No CEL

JUST got this after months of waiting and I must say, it was worth the wait. I love it; just wish the tips were a bit more pronounced, but still awesome.

Axelafy 07/17/2021, 01:33 PM

I bought this exhaust system for my 2015 Mazda3s GT with an automatic transmission. I could not be happier with the system. The quality of materials and workmanship is off the chart. Fit is perfect, with no leaks. And the sound. The sound is perfect as well, very quiet at cruise with a nice growl under acceleration all the way to redline. Reading forum posts about this exhaust made me concerned about the sound level, but nothing could be farther from the truth. This exhaust is not loud at all. Just enough volume and a great tone, to make the car feel special.

Ken Hill 10/18/2020, 06:30 PM

Would give 6* if I could, I purchased this exhaust system through Australia's only corksport distributor (wolf racing products in Sydney) I installed it yesterday on my 2015 Mazda 3 SP25 with no problems at all and I have to say it exceeds all the expectations I had for it. The sound is amazing when giving it the boot and she has a beautiful purr when cruising, it looks stunning in the polished stainless steel finish and the performance increase is definitely noticeable especially paired with the corksport SRI \ cold air box combination which I had installed a month earlier. I can't praise these products highly enough, anyone with a 2014+ Mazda 3 should have this system installed you won't be disappointed.

I am now even more in love with my maz than ever before.
Thanks to all the R&D guys @ corksport for making Mazda's kick arse again.

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Luke Best 02/01/2019, 04:28 PM

I installed my Corksport cat back yesterday on my 2018 Mazda 3 GT Sedan and I am beyond happy with it. The welds are superb, install was simple (kudos on the full color instructions), and the sound is exactly what I wanted.

I installed it at the dealership that I work at and everyone I work with was very impressed by how it sounded and looked. It continues to turn heads!

Thank you, Corksport, for making a wonderful product and helping get it to me quickly, as well.

Benjamin Trochtenberg 05/05/2018, 09:47 AM

Easy to install. Sounds amazing! I definitely notice the increase in power with the combination of the air intake to now the performance exhaust. Good customer service. I will definitely be a return customer.

Steve 05/19/2017, 05:38 PM

Just installed this over the weekend, and it is such a wonderful sound. The startup is a little on the loud side, but it sounds deep and powerful for a 2.0L. 1000-1800 rpm is a very deep note. While 2000-3500 is a bit of a dead zone, it is convenient for cruising (very little droning). The sound picks back up in the higher range, but the cabin blocks alot of it.

Overall, very happy with the system. Major improvement over the factory exhaust. I will update after driving more

Sherbs 02/15/2016, 09:57 PM

What is your part has shipped overseas? I do from Malaysia

Jeremy 08/07/2015, 10:53 PM

Perfect sound & performance

Manuel Gonzalez 04/21/2015, 08:00 PM

bought on black friday. got it yesterday, installed today. took about 1h45m to finish. sounds awesome!!!

(note: i had a hard time unscrewing the o2 sensor with the stock pipe still on the hanger so i droped the pipe and unscrewed it then. i also zip tied the slack from the o2 sensor wire to the new exhaust hanger.)

Cky450mm 12/31/2014, 11:27 AM

Fitted my Corksport cat back system yesterday and am very happy with it. It has a really deep bass note and was easy to fit. The build quality of this exhaust is amazing! Its a shame it is under the car where you dont see it easily. I highly recommend this exhaust and was very impressed with how my purchase was packaged and shipped. Great service Corksport, thank you.

Jason M Australia.

Jason M 12/06/2014, 07:46 PM

Write a review

Dumb question but does the mid pipe replace from the throttle body to the muffler/axle? Or what does it exactly replace up to?

Asked by Ryan | 03/13/2023, 07:47 PM | 1 answer(s)

How bad is the drone in a 2016 3 sedan 2.5l Also does this come with the hanger rubbers?

Asked by Michael guss | 02/15/2023, 08:18 PM | 1 answer(s)

Can I fit this hatchback version of the exhaust on a sedan, if I were to swap the rear bumper with one from a hatchback? Or are the tips not the only difference between the two?

Asked by Dustin Hartgrove | 09/08/2022, 02:22 AM | 1 answer(s)

Will this fit my Mazda 3 2014 Diesel 2.2L Astina?

Asked by Michael | 08/18/2021, 11:41 AM | 1 answer(s)

What is the weight of this exhaust for both 60mm and 80mm? Is it lighter than stock?

Asked by Nao Atsumi | 08/06/2020, 01:12 PM | 1 answer(s)

I don’t understand what’s secondary cat. Does the Mazda 3 has two catelytic?

Asked by Andrew | 05/15/2020, 01:50 AM | 1 answer(s)

Is it compatible with Mazda 3 1.5 skyactive 2018?

Asked by Roman | 02/01/2020, 12:41 PM | 1 answer(s)

How many dbs?

Asked by KISHAN PATEL | 01/13/2020, 02:32 AM | 1 answer(s)

will this fit the 2018 mazda 3 sp25 sedan?

Asked by Dean | 01/04/2019, 08:30 PM | 1 answer(s)

I just bought my first mazda, 2017 Touring, manual trans sedan. My rear bumper does not look like that will it still fit? Where did you get a bumper that has cutout areas for the exhaust tips? Thank you!

Asked by Ryan | 12/04/2016, 10:50 AM | 1 answer(s)

Is this legal in Illinois? Also, do you offer any incentives for purchasing multiple items like exhaust, intake, etc.?

Asked by Dan | 12/02/2018, 01:42 PM | 1 answer(s)

Is the midpipe (the one that runs from the catalytic converter, just in case) included in this item, or is that meant to be selected/purchased separately? (In other words, what "comes in the box" with this item?)

Asked by Roberto Cruz | 07/17/2018, 11:02 AM | 1 answer(s)

Will it fit a Mazda 3 Sport GT 2.5 2018 ?

Asked by Maxime | 06/07/2018, 03:08 PM | 1 answer(s)

I was wondering if the cat-back system would fit with the aero kit. I was told that the axle back doesn't fit, is there any difference?

Asked by Jeggs Lucena | 04/09/2016, 08:32 PM | 1 answer(s)

What is your part has shipped overseas? I do from Malaysia

Asked by Jeremy tan | 08/09/2015, 10:33 AM | 1 answer(s)

I looked around but didn't find an exact answer. But will this fit a 2016 Mazda3 i Sport model?

Asked by John | 10/12/2018, 03:29 PM | 1 answer(s)

Do you have a racepipe that can be used with this system?

Asked by Benjamin | 08/04/2018, 11:40 AM | 1 answer(s)

Estoy en Lima-Peru, puedo comprarlo? Cual seria el precio?

Asked by Sergio Castillejo | 01/12/2018, 11:08 AM | 1 answer(s)

Is the mid pipe available for sale separately?

Asked by Rick L | 10/29/2017, 08:20 PM | 1 answer(s)

Is the catalytic converter left intact? I believe this is required to pass emissions in Missouri ...?

Asked by Christina | 01/03/2017, 01:20 PM | 1 answer(s)

Will you be producing a cat back for a 2.5L GT Sedan?

Asked by Rob | 07/04/2016, 09:31 PM | 1 answer(s)

Will I need a tune to see the hp gains?

Asked by Chris Neuman | 09/08/2016, 08:18 PM | 1 answer(s)

I have a 2015 Mazda 3 Sport with a 2.5 motor and the vehicle as the factory Aero-Kit with rear diffuser (PN: QBMA-50-360 -PZ). Will I have any issues with the exhaust tips hitting the rear body panel? Same question if I lower the car using the Corksport lowering kit?

Asked by Timothy OConnor | 11/13/2016, 10:58 AM | 0 answer(s)

What its the total shiping weight for the hatchback model? Thanks.

Asked by Christian Neyra | 08/05/2016, 10:22 AM | 1 answer(s)

Would it be possible to special order this with larger tips to better fill out the space in the bumper?

Asked by John Rubenstein | 08/15/2016, 03:47 PM | 1 answer(s)

Will this fit a 2016 Mazda3 S Grand Touring Sedan 2.5 auto.

Asked by Chris | 05/19/2016, 07:31 PM | 3 answer(s)

I'm from Toronto, Ontario. Is there any local retailers for Corksport products so i don't have to pay the expensive shipping rate??

Asked by Matthew Holc | 07/28/2016, 08:23 AM | 0 answer(s)

what's the ID of this system and what's the OEM/stock ID?

Asked by Igal | 03/26/2016, 03:02 PM | 1 answer(s)

Will all the original undercarriage panels fit back on after the install (5 door hatch)?

Asked by mzrkr | 03/21/2016, 08:09 PM | 1 answer(s)

Just to be clear...the cat-back midpipe replaces the stock resonator and catalytic converter with just a resonator? That is, you lose a catalytic converter by installing the cat-back?

Asked by Nathan | 02/15/2016, 01:48 PM | 1 answer(s)

Will this be legal in NJ? and if so will it pass any test to prove it is legal?

Asked by Brian M | 01/26/2016, 09:40 AM | 1 answer(s)

Will this fit a 2016 Mazda3 2.0L sedan?

Asked by Daniel J. | 01/12/2016, 08:04 PM | 1 answer(s)

i believe my 1.6 hatchback has only one sided exhaust does this gonna fit ?! and in the bumber ?!

Asked by mohamed wael | 12/31/2015, 06:09 AM | 1 answer(s)

please i have the 2016 mazda 3 hatchback but the 1.6L is this gonna fit my car and i am not sky active is there air intakes which will fit mine ?! thx

Asked by mohamed wael | 12/31/2015, 06:00 AM | 1 answer(s)

So this will definitely fit a 2014 2.5L Hatch?

Asked by Coulter McGraw | 09/15/2015, 03:12 AM | 3 answer(s)

Will this fit on a 2.0 Hatchback AT transmission?

Asked by Ben | 11/02/2015, 10:26 PM | 1 answer(s)

What HP and TQ gains will I see to the wheels with the cat-back on the 2.0? Also, will this require a tune?

Asked by Alex | 07/27/2015, 07:46 PM | 1 answer(s)

Is this item currently in stock?

Asked by Keoki | 07/18/2015, 01:22 PM | 1 answer(s)

For the 13 or so states that have adopted clean air laws similar to California's (such as Maryland), would a cat-back be legal in those states, or is replacing the secondary cat converter down there illegal?

Asked by Chris | 06/25/2015, 06:10 AM | 1 answer(s)

Would the Corksport midpipe designed for the hatchback fit on a sedan? For example, does the hatchback have a difference length midpipe than the sedan. Or is the only difference between the hatchback and sedan version is how the exhaust tips are angled?

Asked by Bob | 06/13/2015, 10:36 AM | 1 answer(s)

If i buy the cat-back, can i just install the axle back part first since i still have warranty in my car or should i just buy the axle back and order the rest of the middle pipe later?

Asked by John | 06/09/2015, 08:09 PM | 1 answer(s)

Will this pass an OBDII check in Texas?

Asked by patrick weis | 05/22/2015, 10:50 AM | 1 answer(s)

If I have already bought the Axel back exhaust for sedan but now have decided I want the Cat-back, is there a way I can buy the rest of the mid pipe without having to buy the entire exhaust (seeing as how I already have the axel back portion)

Asked by Patrick | 05/22/2015, 10:54 AM | 1 answer(s)

is this available right now?

Asked by ren | 06/02/2015, 02:55 PM | 1 answer(s)

Can I attach the muffler for the sedan cat back exhaust directly to the OEM mid pipe like an axle back install? I'd like the option to not have to run the CS mid pipe assembly if I purchase the cat back system.

Asked by Forrest | 05/16/2015, 06:58 AM | 1 answer(s)

what is the dB reading between stock and corksports exhaust? at idle and max dB reading.

Asked by SAM MARTIN | 04/07/2015, 10:56 PM | 0 answer(s)

Any idea if this is legal in Pennsylvania and will pass inspections?

Asked by Steve | 04/07/2015, 11:59 AM | 1 answer(s)

Will this fit a 2015 sedan 6 speed manual transmission?

Asked by Kevin | 04/06/2015, 07:53 PM | 1 answer(s)

is the bolt flange angled downward and are the bolt holes even or offset?

Asked by Sam Martin | 03/21/2015, 10:43 AM | 1 answer(s)

Is this catback exhaust could fit on 2014 mazda3 2.0 sedan? if it's not, which catback system could fit on?

Asked by Alex | 03/19/2015, 09:23 PM | 1 answer(s)

What is the HP difference and the sound difference between the axle back and cat back for the 2.0 sedan?

Asked by Storm Reynolds | 03/10/2015, 04:18 PM | 1 answer(s)

I have a mazda 2014 mazda 3 sedan , my question is will the exhaust fit along with the Rear lip kit that mazda provided my car with (OEM optional rear lip)

Asked by Eric | 02/26/2015, 04:25 PM | 1 answer(s)

Hi corksport i want to know a already avec your axeback for mazda3 2014 it is possible to buy only the catback and not all the line? Thanks

Asked by max viau | 01/30/2015, 08:55 AM | 1 answer(s)

Thanks corksport for answering all the questions. Final question, do you guys have an estimate # on the ft/lb torque increase this CBE will provide on the 2.5L? Thanks a lot!!

Asked by Sonny | 01/16/2015, 03:07 PM | 1 answer(s)

Regardless of whether this is legal is California, do you know if it will pass smog?

Asked by Ryan | 01/12/2015, 10:49 AM | 1 answer(s)

Is it legal in germany?

Asked by phil | 01/09/2015, 07:43 AM | 1 answer(s)

I cant tell if the sedan version is angled downwards? Also, is the video posted for the 2.5L sedan or 2.0L?

Asked by Sonny | 01/01/2015, 06:42 PM | 1 answer(s)

Do you have dyno charts with both the axle/cat versions installed on the 2.5 with auto? I would be curious to see stock v.s. both intake and exhaust installed! Thanks!

Asked by Jeremy | 11/25/2014, 01:32 PM | 1 answer(s)