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2014-2018 Mazda 3/6 2.5L - Race Header

Price: $799.99
Price in points:  What are Points? 800 points
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Click here to sign up for the product launch notification. 5/1/2019 08:00 AM 5/1/2019 8:01 AM America/Los_Angeles 2014-2018 Mazda 3/6 2.5L - Race Header CorkSport is releasing the 2014-2018 Mazda 3/6 2.5L - Race Header, you can be one of the first people to get one. CorkSport Performance

2.5 Skyactiv performance header for the Mazda 6 and Mazda 3


The one-of-a-kind Race Header for the 2014-2018 Mazda 3 & Mazda 6 2.5L takes your Mazda to the next level. Utilizing the same 4-2-1 design as OE, but with performance as the key focus. Long tube primaries and secondary runners are used to boost mid-range torque where the vehicle is most commonly driven vs just peak engine RPM. This boost in mid-range power and torque makes your Mazda even more fun and easy to drive

For Mazda 3 applications, pair the Race Header with the CorkSport 80mm Cat-Back Exhaust system for some truly exhilarating sounds.

Dyno testing completed on Mazda 3 and Mazda 6 applications with similar results. Mazda 6 dynograph shown above.

Check Out The CorkSport Mazda3 80mm Catback exhaust

Check Out the Blogs Related to this Product!

OEM 2.5L Skyactiv G Exhaust Header

Additional Features
  • Compatible with: 2014-2018 Mazda 3 2.5L Manual, 2014-2018 2.5L Mazda 6 Manual
  • Designed in America: Designed in Vancouver, Washington, in the Pacific Northwest.
  • CorkSport Service & Support: 2 year limited warranty, full color installation instructions, all necessary components, and knowledgeable telephone support at (360) 260-2675.

  • 2.5L Engine Only,
  • Manual Transmission Only,
  • Racing Use Only

How To Install Your CorkSport Mazda3 and Mazda6 2.5L Race Header

It will take you five hours to install the CorkSport Mazda3 and Mazda6 2.5L Race Header with our easy-to-use instructions.

5 Hour Install Time

5 Hour Install Time

Difficulty: 4/5

4/5 Difficulty

2-Year Warranty

2-Year Warranty



All we have to say is wow!

When we unboxed it we could really see how massive, intricate and detailed this race header is. It comes in two sections for a reason after all.

We setup our hoist and got to work. Quickly removed the windshield cowl, heat shields, and old header. With it being two pieces it went in faster then the old cams out. With everything torqued down we fired it up. This thing really opens up the volume levels.

Went to the dyno to show gains on our 18 with a few other Corksport bolt ons. From simple bolt on we gained significantly in mid range with a huge tq gain. We then started doing the tuning which brought us up 10 whp peak and almost 30 wtq peak over previous runs. Again we showed even bigger gains in mid range horsepower and a very well carried torque curve.

Glad we got this header as it will definitely push our 2.5 Skyactiv to the next level.
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Am I correct in assuming that with no CAT, the car will not pass a standard NYS (or any other state) inspection?

Asked by Tiger | 10/22/2019, 01:17 PM | 1 answer(s)

Can i install this into a Mazda 3 2.5lts engine 2012 model?

Asked by Oscar | 08/17/2019, 10:14 PM | 1 answer(s)

What's the reason for the car having to be manual? And if that's the case will it become available for the 2.5L automatics?

Asked by Zack | 04/25/2019, 01:15 PM | 1 answer(s)

Is a high flow cat possible with this header and the 80mm exhaust? Or is the delete necessary/piping would need to be cut out to accommodate?

Asked by Evan | 04/13/2019, 08:34 PM | 1 answer(s)

Why weren't you able to install this part without a CEL?

Asked by Luke┬áBest | 03/08/2019, 02:17 PM | 4 answer(s)

Will you develop a fitment for automatic transmission 2.0L Mazda 3?

Asked by Josh T | 03/24/2019, 11:58 PM | 1 answer(s)

Would it be possible to tune the engines control unit so it doesn't throw a code with this header installed? ie: cat deleting.

Asked by Luke | 03/18/2019, 09:26 PM | 1 answer(s)

Will Check Engine Light appear on the dashboard with these headers installed & 80mm Exhaust System?

Asked by Robert | 03/08/2019, 02:29 PM | 1 answer(s)

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