Under hard braking, the firewall will actually deform, allowing the brake pedal, booster and master cylinder to move. Yes, even on the ND Miatas. This flex takes away some of your brake pedal stiffness and makes it more difficult to balance the car on the edge of lockup because there's essentially a big spring in the system. You'll find your braking will be more precise and will require less pedal travel.

This simple brace bolts into your Miata and keeps the master cylinder right where it's supposed to be. It's adjustable for a perfect fit. At under two pounds, the brace is able to reduce firewall deflection by 85% under heavy braking.

For left-hand drive cars only! Compatible with factory shock tower braces. It is not compatible with the Fiat 124 Spyder as it interferes with the coolant bottle.

Cars equipped with our CAN integration kit for the Hush-o-Matic exhaust that came with a short (2" long) solenoid mounting bracket will require the new, longer (3" long) bracket. That can be purchased separately (will be available shortly).