CorkSport Mazdaspeed3 13 Inch Big Brake Kit

Even More Stopping Power for your Mazdaspeed 3

In our drive to make more power, we often forget about adding measures to keep us safe at the greater speeds we are achieving. The CorkSport Big Brake Caliper Kit is a great place to start, however if you wish you could stop even faster say hello to the CorkSport 13inch Big Brake Kit. Designed for serious stopping power, it includes 13” directional rotors, powder-coated 4-piston calipers, upgraded pads, and everything you need to install it on your Mazdaspeed3.

Read on for a breakdown of all the components


The rotors have been designed to provide optimum stopping power while minimizing noise for street use. The upgrade to 13inch diameter rotors provides greater braking torque for an equivalent braking force (like how a longer wrench makes it easier to loosen a tight bolt). The larger diameter combined with an increased thickness of 28mm (vs 25mm for OE) provides better cooling as there is a larger mass to reject heat into.

In addition, slots were added to the friction surface to help sweep away any debris, brake dust, or gases that can otherwise affect your braking characteristics. We avoided drilling the rotors as holes decrease your total friction area and increase the chance that the rotor will crack. By moving to a two-piece design, we were able to decrease the overall weight of the rotor and by making the center section out of aluminum, it can help dissipate heat from the rest of the rotor better. Semi-Floating mounting between the inner and outer sections allows for quieter rotor vs having a full-floating center section.

Finally, the vanes in the rotor are atypical; these vanes are the “fins” that connect the inside and outside of the rotor. By using curved vanes instead of the typical straight vanes, the rotor becomes directional and has to be used on a specific side of the vehicle; however, it also provides more efficient cooling. When the rotor turns, the curved vanes draw air through the center of the rotor and out through the edge, providing greater airflow than a straight vane and thus better cooling. There is another bonus to heat dissipation as the curved vanes have a larger surface area that will come in contact with air than an equivalent number of straight vanes.


Forged aluminum, four-piston performance calipers are included with the kit in a choice of powder-coated blue, red, or black.

Although each piston is individually smaller in diameter than the single OE caliper piston, the total surface area is increased so the braking force at a specific brake pressure is increased. Larger piston surface area means larger brake pads can be used as well. You also get more even braking force on each side of the rotor due to the opposed piston design. This encourages even pad wear, even rotor wear, and consistent braking characteristics.

The pistons themselves were specifically chosen for optimum braking endurance and reliability. They are staggered in size, with the pistons on the leading edge being slightly smaller than the trailing edge pistons. This is another protection for even pad wear. Each piston is made completely out of stainless steel for its low conductive heat transfer. What this means is that the pistons themselves will transfer less heat to the brake fluid than an aluminum or steel piston, decreasing the chances of overheated brake fluid.


Street performance brake pads are included with the kit that bridges the gap between Mazdaspeed3 street and track pads. They are larger and a more aggressive compound than the pads included with the CorkSport MS3 Big Brake Caliper Kit but are not a full track pad. They will produce less dust and noise than a track pad but still need to be warmed up for optimum performance. Should you need new pads or want to change to a different pad, you have a bunch of options from G-Lock, Carbotech, EBC, Hawk, and various other manufacturers.

Lines, Brackets, and Hardware

The rest of the CorkSport 13inch BBK is composed of exactly what you need to properly and safely install the kit on your Mazdaspeed3. Stainless steel brake lines are included to remove any risk of a soft brake pedal and ensure the calipers are operating optimally. High strength steel brackets properly position the four-piston calipers on the new rotors using the OE bracket locations. All components are locked down using Grade 12.9 hardware with a corrosion resistant coating for lasting durability.

The CorkSport Mazdaspeed 3 13” Big Brake Kit has everything you need to keep you safe at increased horsepower levels. If you’re looking for more than the stock brakes have to offer, let the CS Mazdaspeed3 BBK be a part of your build.

Daytona International Speedway and a Mazda 3

Daytona International Raceway Track Map

Most people think Nascar when they hear about Daytona International Speedway. To road course guys like me, it’s the site of a 24-hour race, which we wait for every year in January. This past year, I participated in the SCCA Majors to qualify to run two different classes at the Runoffs, which were hosted at the Daytona Intl. Speedway.

My normal racetrack chariot is a 2011 Mazda 2 B-Spec, which I’ve raced for the past 4 years.

Derrick’s 2011 Mazda 2 B-Spec from Daytona coming out of turn 3.

I’ve been quietly building a 2015 Mazda 3 Sedan with a 2.5 engine to run in the SCCA T-4 class starting late in the season this year with the purpose of running it at Daytona. We picked up the car from getting the cage installed and had nine days to get all of the parts installed, get it dyno tuned for 98 octane, and load it up into a trailer to go to Daytona via Mazda Raceway Laguna Seca. There’s nothing like taking a completely unsorted car to a national championship race on the other side of the country, just for fun.

At the Pirelli World Challenge race weekend at Mazda Raceway, the CorkSport Mazda 2 was piloted by Joey Jordan and swept the three races for a perfect weekend. In between the Mazda 2 getting serviced, we worked on the Mazda 3, getting the sound deadener removed, seat mounted, and safety gear installed. We also changed the springs installed on the car to CorkSport’s 2014+ Mazda 3 springs to make the ride height lower. At Daytona, you want less aero drag because of the low profile, so having the car as low as you can get it helps the speed on the oval section.

After the last race was finished up at Pirelli, we loaded up both Mazdas and headed to Daytona, which is a 44-hour drive across the country.

We arrived at Daytona on Friday to do some final setup on the Mazda 2 and finish the prep work on the Mazda 3 before our test day on Saturday.


I’ve raced at Autoclub speedway in Fontana California before, so I was familiar with a banked track but not quite as familiar with that long of a time on the track.

In the Mazda 2, I found myself looking around at the scenery a lot during the Saturday test day. The infield was fun to find the limits on the car and mastering the bus stop with a quick hit of the brake then back on the gas was a big challenge for me.

In the Mazda 3 on Sunday, I got a reminder of what a new car can be like while getting everything dialed in. I had massive understeer with the car and had to modulate the throttle constantly to get the car to turn. On the straight sections, the car was fast and I could hang with most of the cars out there if I got enough of a run out of the corners. To give you an idea of how much faster the Mazda 3 was at the time trap, the fastest draft time I got with the Mazda 2 was 119mph. In the Mazda 3, it was 139mph. This was before you head into a turn and slow down in the shortest possible space before busting a quick left into the infield. If you get it wrong, the guys behind you made up time on you. If you get it right, you can get more of a lead.

Another huge problem I had with the Mazda 3 was I couldn’t see anything out of the left side of the car. The window size is pretty small, the window net didn’t help, and the massive left mirror did its best to keep me from seeing the apex or the other cars.

I qualified for the championship race 15th out of 22 cars, which isn’t great, but it’s not the back of the field. I was four seconds off the pace of the pole sitting Honda Civic, which gives you an idea of how well sorted that car was in comparison to the Mazda 3 in its first weekend at the track.


Honestly, the T-4 started off pretty crappy for me. I got jumped on the start and was forced to the outside of turn 1 where I couldn’t judge the car next to me going through the corner, so I lost a spot. Two laps later, I got to watch Scotty White in his Mustang get turned into by a RSX right in front of me going into the bus stop, which made for some great front row entertainment. Toss in a few dive bombs by a Camaro and it made for a good time. I spent the rest of the race trying to be as nice to my front left tire in the infield as I could.


In the end, I finished in 15th, which is the exact spot I started the race in! For this upcoming season, we’ll work on the suspension setup to improve the car’s cornering speeds to be more competitive and work on the driver setup.

I have to give a big thanks to CorkSport for the parts installed on the Mazda 3, which worked flawlessly, Joey Jordan Motorsports for the spotting and chassis setup at the track, Joe at Dynotronics for the 98 octane Skyactiv Tune in a super short period of time, Monarch Inspections for letting us steal your worker bee to drive the truck across the country, 47 Moto for the wrench help, Mazdaspeed Motorsports for being the best vehicle manufacturer that supports club racing, and my wife and kids for putting up with me running off to chase my dreams.

Meet Derrick from CorkSport. Loves racing, Mazdas, and his CS fam.

Mazda Performance In Action at the Track

We live and breathe Mazda.

But you already knew this about us. We work our 9-5 serving Mazdas and then on the weekends, we hit the track with our very own Mazda.

What exactly goes into our Derrick-driven Mazda3 race car? CorkSport.

Check out our performance in action infographic and see what goes into the CS race car. Don’t worry: if you have an older Mazda, we still have you covered.

What goes into our CorkSport race car?

Rear motor mount

Get improved handling and road feel while maintaining a comfortable ride. Our rear motor mount reduces your engine’s movement which enhances the power transfer from engine to tire, therefore improving throttle response, gear shifting, and driver feedback.

Short ram intake

Instant increase in HP and torque by reducing intake restrictions and bringing more air into the intake chamber.

Cat back exhaust

Gain more horsepower and torque by creating a free-flowing system without restrictions. You’ll get smooth flow, increased power, and a faster spool up.

Lowering springs

Give your car the performance appearance and edge you have been looking for. You’ll get a quicker turning response, crisper road feel, and a firmer spring rate, all while maintaining excellent ride quality.

Camber plates

Get adjustability to dial in performance and handling. Our front camber plates provide up to -3 degrees of camber.

Rear sway bar

Remove the tendency to overpower the front tires under hard cornering. Our rear sway bar increases the spring rate on side of the suspension which is compressed most and its adjustability allows you to fine tune the handling.

Now get some drive time in and hit the track.