Big Brake Kits

Does your braking performance fade after repeated hard stops, or has your car gained more power and bigger wheels? A big brake kit combines larger discs and multi-piston calipers in one set, designed for specific car models. It is for you if you want to upgrade the brakes on your street or track project.

How to choose the right big brake kit

A big brake kit replaces the original calipers and discs with a larger combination. A larger disc diameter typically gives more braking torque, and larger discs and calipers can absorb and dissipate more heat. This can reduce the risk of overheating and brake fade. How much difference you notice depends on the car's weight, tyres and driving. In this category you will find, for example, Brembo GT kits for the front and rear axle as well as brands such as Alcon, Baer Brakes, EBC and APR.

• Wheels: Larger discs and calipers need space inside the wheel. Check the kit's requirements for wheel diameter and clearance.
• Discs: 2-piece discs have a friction ring mounted on brake rotor hats and can weigh less than 1-piece discs. Drilled or slotted surfaces can affect pad bite and wear.
• Pistons: The number of pistons alone does not determine braking performance. Pedal feel depends on the interaction between caliper, disc size, pads and master cylinder.
• Balance: If you only upgrade the front axle, the brake balance between front and rear can change.

Choose brake pads that suit both the caliper and your driving. If you would rather put together your own setup, you can choose brake calipers separately. Installation requires correct tightening torque, thorough bleeding and bedding-in of discs and pads. Always check that the kit is designed for your exact model and year.

Frequently asked questions

Can a big brake kit be approved for a street car?

It depends on the product and the car. Check for the specific part number whether the calipers, discs and pads have the necessary approval, e.g. E-mark or R90, and clarify the modification with the vehicle inspection authority before installation.

Do I need bigger wheels to fit the kit?

Not necessarily, but larger discs and calipers need space. The kits typically have requirements for minimum wheel diameter and clearance between caliper and spokes. Compare your wheel dimensions with the kit's specifications before buying.

Why does the pedal go soft after a hard track day?

A soft or long pedal can be caused by boiling brake fluid. This is different from brake fade caused by overheated pads and discs. Fluid with a high boiling point and regular replacement can help.