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Vancouver, WA


M-TH 9A-5P | F 9A-12P | SA-SU CLOSED

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Big Brake Kit for 2019+ Mazda 3 Turbo, Non-Turbo & CX-30

Price: $1,599.99
Price in points: What are Points?1600 points
Drastically upgrade your stopping capabilities with the Mazda 3 Big Brake Kit
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Welcome to the CorkSport 13” Big Brake Kit for 2019+ Mazda 3, 2021+ Mazda 3 Turbo, and 2019+ Mazda CX-30! We improved just about every aspect of the braking system to provide your ride with vastly improved braking performance. A huge rotor size upgrade is coupled with four-piston forged aluminum calipers and stainless steel brake lines to completely change how it feels when you push that brake pedal. Improve your confidence while driving so you can attack corners, whether on the track or just on some twisties in “Mexico”. Read on for full details!


The CorkSport Advantage


Performance Advantage:

Brakes are a complicated system that has to carefully balance heat, weight, and force to deliver optimum braking performance. Thankfully, the CorkSport BBK has been carefully designed to improve each of these aspects through high-performance components. When combined together, each component in the CS big brake kit compliments one another to really outshine the OEM brakes, giving you the confidence to know that you can stop, no matter the situation.

Cx-30 turbo and no turbo big brake kit

Brake Rotor Size Increase:

The biggest change about the CorkSport Big Brake Kit is the large increase in brake rotor size. The CS BBK uses a 13” (330mm) diameter brake rotor that is 1.10” (28mm) thick. This is a big increase from the OEM rotor size, which measures 11.6” (295mm) in diameter and 0.98” (25mm) thick on our Mazda 3 Turbo. Our naturally aspirated model is even smaller at 11” (280mm) diameter. This is quite a large jump that offers much more braking torque at the same amount of braking force (like how a longer wrench makes it easier to loosen a stuck bolt). The larger diameter and thicker rotor mean there is more mass for the system to reject heat into; keeping your brakes from overheating for longer.


Performance Brake Rotor Design:

The CS brake rotors aren’t all just size, they have been designed specifically to offer the best function for your car. They are a two-piece design with an aluminum center section. This keeps weight down while improving heat transfer efficiency. The rotor rings themselves are also optimized for heat dissipation, with specially curved “vanes” in between the inner and outer faces. These vanes help draw air through the rotor to cool it while the rotor is spinning. Lastly, each rotor is slotted for more consistent brake performance. The slots help sweep away brake dust, gases, and any other debris that may adversely affect braking

4th gen Mazda 3 Big brake kit

Four-Piston Calipers:

The calipers in the CorkSport 4th GEN Big Brake Kit are 4-piston units made from forged aluminum. 4 pistons offer a large advantage over the OEM single-piston calipers. While each piston is individually smaller than the single OEM piston, the total piston area is larger. This means more braking force from the same amount of braking pressure. Plus, having multiple pistons on both sides of the brake rotor allows for maximized brake pad surface area and encourages even pad wear. We even stagger the piston sizes slightly, to further promote even pad wear. Each caliper has a powder-coated color finished to ensure a long good looking life under harsh brake conditions or dust and heat. As a final bonus, each caliper piston is made from stainless steel. Stainless has a lower coefficient of heat transfer than aluminum or regular steel. This keeps your brake fluid cooler for longer!

Gen 4 mazda 3 brake pads

Upgraded Brake Pads:

But wait there’s more! Each CorkSport BBK comes equipped with upgraded brake pads pre-installed in your 4-piston calipers. They bridge the gap between a street pad and a full trackpad. You have good performance when the brakes are cold, which gets even better with a little heat in the brakes, yet they are very quiet and not too dusty. We would still recommend an actual trackpad for extended track time, but they perform well as a in-between set. Don’t worry, when it comes time to replace pads, the CS BBK uses a very common size with plenty of options from all the big-name brands.


Hardware, Brackets, and Lines:

The CorkSport BBK is truly an all-in-one kit. All hardware needed for installation is included, all of which is corrosion-resistant grade 12.9 bolts. High-strength billet caliper brackets are also included, to keep everything positioned securely. Braided stainless steel brake lines ensure a stiff and consistent pedal feel. As a final bonus, even with all the added size and complexity, the CorkSport BBK weighs in at about 0.25lbs LESS than the weight of the OEM MZ3 turbo brakes.

  • OEM wheels require the use of a 12mm or thicker wheel spacer for operation. We strongly recommend extended wheel studs for a spacer this large.
  • Some aftermarket wheels may require the use of a wheel spacer for operation of this BBK. Use this template (Click Here) to check if your wheels will fit.
  • Rear Only BBK has a unique wheel fitment template, refer to that template for checking rear wheels.

Additional Features

  • Vehicle Fitment: 2019+ Mazda 3, 2021+ Mazda 3 Turbo, 2020+ Mazda CX-30.
  • Designed & Developed in America: Designed, tested, and validated in Vancouver, Washington, in the Pacific Northwest.
  • We sell replacement brake rotor rings when the time comes to replace your rotors. Give us a call to order some!
  • 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.

Brake Pad Cross Reference

The following brake pads series may operate with the CorkSport 13” BBK. Other brake pad manufacturers may have pads designed for this configuration that is not listed here.  

How To Install 2019+ Mazda 3 Turbo, Mazda 3, and Cx-30 Performance Big Brake Kit

It will take you 3 hours to install the CorkSport Mazda 3/Mazda 3 Turbo/CX30 BBK.

3 Hour Install Time

3 Hour Install Time

Difficulty: 3/5

2/5 Difficulty

2-Year Warranty

2-Year Warranty



2019 to 2021 how to installation instructions for the Big Brake Kit

After running the CorkSport 13-inch Big Brake Kit on our 2019 Mazda 3 for about 2 years, we can confidently say it's a fantastic upgrade. Brake fade is non existent with this kit too, especially after multiple trips to the Tail of the Dragon!

The titanium finish adds a sleek look to the car, and the sport pads provide excellent stopping power. Installation was straightforward, and the kit has performed flawlessly since day one.
I can't stress enough how nice this Big Brake Kit is . The fit and finish of the parts are superb . The packaging is second to none . The brakes look amazing but they work even better . Corksport always comes through with the finest Mazda parts available .
Awesome brakes. No brake fade and can brake as hard as possible. I had to buy a 12 mm spacer and wheel stud tool from Amazon as I used my OEM wheels. Cleared the brake calipers.

Install tip: Buy ARP 100-7719 wheel studs and freeze them for two hours. It will go in easy.
This BBK kit solves the biggest issue with this car in my opinion which were the brakes. Stock ones fade quickly and just feel like they don’t bite. This kit is amazing, brake feel is improved, they BITE and just give you so much more confidence!
The oem brakes are easily the least confidence inspiring equipment I've had. Throwing this anchors on was a no brainer for the price and result. Not only are they beautiful and fill up the wheel well with that OE+ fitment, they absolutely inspire confidence pulling up in the even you need some clamp force. Fantastic kit, just warn the passengers before you throw the stops out.
I have nothing but positive things to say about this kit. The stopping power is so dang impressive, feels like a different car. Also, the brake pads that come pre-loaded are great, I didn’t feel there was an need to swap them out. This kit is definitely worth the money.
Do you want teeth marks in your dash?

Do you too, like to be able to stop when getting cut off by an angry Karen because your car is too loud and she wants to white knight for society when they couldn't care less?

Well these will definitely get you on your way to better stopping power! With a much sportier feel, more pad options for street and track than a Walmart hygiene aisle, and all the beautiful machining you'd expect for go fast, stop fast parts.
WOW! Stock brakes are no comparison to these!
Write a review

What's the difference between this kit and the CX-50 kit? Just the lines or do the calipers mount differently?

Asked by Tony | 09/11/2023, 10:36 AM | 1 answer(s)

Does the big brake kit fit the OEM 2020 Mazda 3 wheels?

Asked by Mason Steingrebe  | 07/08/2023, 03:28 PM | 1 answer(s)

Plan to use OEM wheels. Can recommend where to purchase the 12 mm wheel spacer and extended wheel studs? What length studs should be purchased.

Asked by Ricky Cox | 06/15/2023, 07:51 PM | 1 answer(s)

Would these fit on the CX-3?

Asked by Conrad | 05/15/2023, 03:32 PM | 1 answer(s)

Is the 29.31 lbs per side, or for the entire kit?

Asked by Mike | 02/12/2023, 01:00 PM | 1 answer(s)

I'm looking at aftermarket wheels, how do I tell if the big brake kit will fit before ordering?

Asked by Justin Potter  | 02/09/2023, 11:07 AM | 1 answer(s)

When buying, is 1 quantity a pair for both left and right wheels? Or need to add a quantity of 2 to get both sides?

Asked by Christian Rodriguez | 12/13/2022, 10:50 AM | 1 answer(s)

Do Corksport have plans on offering a brake kit for the rear?

Asked by D. Brown | 11/24/2022, 02:51 PM | 1 answer(s)

Are only those four colors available?

Asked by David C | 10/25/2022, 08:14 AM | 1 answer(s)

Will installing these void the warranty?

Asked by Angel | 10/06/2022, 11:27 AM | 1 answer(s)

Does this work with the brake assist/adaptive cruise control?

Asked by Melvin | 08/13/2022, 11:14 AM | 1 answer(s)

Where are the rotors for these on your site

Asked by Joseph  | 12/07/2021, 05:17 PM | 1 answer(s)

How many miles will the caliper, pad, and rotor last individually

Asked by Bob | 12/07/2021, 05:04 PM | 1 answer(s)

Will these affect any break sensors on the dash and where do you get replacement pads and rotors for these

Asked by Nick w | 11/18/2021, 10:58 AM | 1 answer(s)

What is the smallest wheel diameter that will fit over the BBK? I have some 2005 Mazda6 17" 5 spoke alloys that I use with 25mm spacers on my 2019 MZ3 for my winter tires. Will this clear the BBK?

Asked by Leigh Orser | 09/20/2021, 02:50 PM | 1 answer(s)

could i get these for the rear too or just the front.

Asked by kyni lewis | 09/20/2021, 06:52 PM | 1 answer(s)

Do these include Front AND Rear brakes?

Asked by Ryder | 09/02/2021, 06:03 PM | 1 answer(s)
Mazda performance parts financing is available with CorkSport

Looking to finance your parts purchase and want to get 6 months NO interest on any purchase over $199? Click on the image above for more details.


2019+ Mazda 3
  • 2019 Mazda 3
  • 2020 Mazda 3
  • 2021 Mazda 3
  • 2022 Mazda 3
  • 2023 Mazda 3
2021+ Mazda 3 Turbo
  • 2021 Mazda 3 Turbo
  • 2022 Mazda 3 Turbo
  • 2023 Mazda 3 Turbo
2020+ Mazda CX-30
  • 2020 Mazda CX-30
  • 2021 Mazda CX-30
  • 2022 Mazda CX-30
  • 2023 Mazda CX-30
2020+ CX-30 Turbo
  • 2020 Mazda CX-30 Turbo
  • 2021 Mazda CX-30 Turbo
  • 2022 Mazda CX-30 Turbo
  • 2023 Mazda CX-30 Turbo