Flyin' Miata : Chassis : Brakes : FM four-wheel Little Big Brake Kit

This is our standard Little Big Brake Kit (aka LBBK) with bonus parts. The standard kit addresses the front only. We added in new pads for the rear brakes along with new rear stainless steel brake lines and our adjustable proportioning kit.

This kit was originally developed as a light weight brake option. After seeing a custom minimum weight brake system on Bill Schenker`s National level CSP car, we figured we could come up with something for everyone. So we knocked 4 lbs of unsprung weight off each front wheel by replacing the stock cast iron calipers with aluminum Wilwood parts. Along with the weight loss, we also ended up with a four-piston caliper for nice even pad pressure. And yes, we said 4 pounds of weight per corner.

The aluminum radial mount Powerlite caliper is a fairly new design from Wilwood that`s an excellent match to a quick Miata. It`s compact enough to fit around the small Miata discs, but is nice and stiff and gives even pressure across the 5 square inch pad. Since the pistons are properly sized, the stock pedal feel will not change. Porterfield, Hawk, Carbotech, Performance Friction and Wilwood all offer a full range of pads to choose from. We ship them with a set of Wilwood E compound pads in the front and Porterfield R4S pads in the rear, which are a good street/autocross choice. If you want a different pad combination, we recommend buying the front-only LBBK without pads and sourcing the other parts separately.

The adjustable proportioning valve will allow you to adjust the front/rear bias of your brakes so you can get the perfect balance. This means shorter stops and better rotation into corners. It`s an easy installation and allows you send anything from 43% to 100% of the line pressure to the rear wheels.

These are not intended to be super heavy duty track brakes. For that, we recommend our four wheel big brake kit with the heavier Dynalite calipers and two-piece rotors. These are a good street, autocross and light track option. They have better heat management than stock brakes due to the aluminum caliper, but rampaging V8s on slicks will want more.

Available to fit any 1990-05 stock Miata brake rotor. However, there`s a catch. On the smaller rotors, the caliper sits very close to the wheel mounting surface. You will have to check clearance on your wheels to confirm the caliper will clear. The smallest 9" rotor may require a spacer - a 10mm spacer will solve any clearance problem, and 5mm will likely work for most wheels. The 10" rotor setup fits many more wheels, including almost all factory wheels after 1994 - yes, including 14" ones - as well as popular aftermarket ones such as 15x8 or larger 6ULs. 11" should work with almost anything. The factory Sport rotors are actually 10.6" and the 1990-93 rotors are 9.3", we rounded off to make it easier to identify the three sizes.
1990-93 template (9" rotor)
1994-02 template (10" rotor)
2001-05 Sport template (11" rotor)

We have just discovered some 11" rotors are too thick. The Powerslots we sell fit fine, but we have been told Centric brand is too thick to fit this particular caliper. Please measure your rotors before ordering, they cannot exceed 22.1 mm. Centric claims their rotors are thinner than this, but experience tells us otherwise.

Includes calipers, pads, brackets and stainless steel lines for the front, pads and stainless lines for the rear. Also includes our proportioning valve kit for all applications except for 11" ABS cars. Rotors and rear calipers are not included as you will keep your existing parts. If you`re changing rotor size, you`ll need to pick up a set of the appropriate rotors as well. If you are mixing and matching the rotor sizes, please call us to make sure that you will get the correct rear pads. The standard rear pads in the kit are the ones identified by the year: 1990-93 pads for the 9" kit, 1994-02 pads for the 10" and 2001-05 for the 11".