A Flyin' Miata exclusive!
We know that Miata owners are always looking for ways to shed weight. Autocrossers in particular. 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.
Weight note: The drop in weight quoted here assumes that you're sticking with the same diameter rotors that you currently have. If you go up to a larger rotor size, the weight savings won't be as significant due to the increased rotor mass.
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 BP-20X compound pads, which are a good street/autocross choice. Brake balance will not be dramatically affected unless you install a different pad type than your previous setup. Please note that you will have to use a pad for a Wilwood Powerlite caliper, standard Miata pads will not fit.
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. 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 many 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 discovered some 11" rotors are too thick. The FM branded rotors 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.
Color note: Wilwood has transitioned from Type II to Type III anodizing. The new process is harder and more dense than Type II. The old anodizing could also change color under very hot temperatures, which is not a problem with the new process as no dyes are involved. Unfortunately, the lack of dye means it's a different color and will no longer match black calipers - please see pictures for details.
Includes calipers, pads, brackets and stainless steel lines. Rotors are not included. You will keep your existing rotor. If you're changing rotor size, you'll need to pick up a set of the appropriate rotors as well. This is a two-wheel kit, nothing is changed at the rear. We do offer a four wheel version that includes new pads and lines for the rear as well as a proportioning valve.