Trackspeed 11.75" Gen2 Big Brake Kit


Wheel fitment templates can be downloaded at the bottom of the page. 

ETA May 2019

Trackspeed's 11.75" Gen2 BBK retains the legendary performance of our original Gen1 11.75" BBK while adding additional wheel clearance. Our all-new proprietary 6061-T6 aluminum hat is Miata-specific, which allows us to place the rotor ideally within the space provided to maximize wheel clearance. Our hats continue to be the only option that allows for the use of safety wired rotor hat hardware. Our Gen2 brackets are tweaked slightly to ensure compatibility with Keisler aftermarket drop spindles as well. The world-class pedal feel and inexpensive running costs are unchanged from our Gen1 kit. 

Pair our 11.75" BBK with a factory Sport 10.9" rear rotor and 1.8L (with adapter bracket) or Sport rear calipers. Add a Trackspeed proportioning valve kit (with proprietary ultra-robust steel adapter fittings) to give your Mazda Miata incredible braking performance in any situation. 

Our recently-announced "Mega Brake Kit" Superlite option is the largest big brake kit available for the 90-05 Miata today. It is designed primarily for forced induction road-race applications which require a substantial increase in stopping power and pad longevity over what a standard Dynalite/Dynapro caliper can offer. 

To allow our customers to run the pads of their choice, our kit ships without brake pads. We can provide Hawk or G-LOC pads in street and track compounds. Click here for our Hawk pad selection.

Confirmed wheel fitments (Dynalite/Dynapro 4-piston, no spacers):

  • 15x8 +36 949Racing 6UL (all generations)
  • 15x9 +36 949Racing 6UL (all generations)
  • 15x10 +25 949Racing 6UL (all generations)
  • 15x11 949Racing 6UL
  • 15x9 +35 Advanti Storm S1
  • 15x9 +36 Jongbloed 500 Aero
  • 15x9 +35 Konig Dial In
  • 15x8 +20 XXR 531

Confirmed wheel fitments (Superlite):

  • 15x10 +25 949Racing 6UL (all generations)
  • 15x11 949Racing 6UL
  • 15x10 +15 Jongbloed 500 Aero
  • 15x10 +25 Konig Dekagram
  • 15x9 +35 Advanti S1 Storm (5mm spacer required)
  • 15x9 +35 Konig Dial In (5mm spacer required)

Full kit:

  • Wilwood Dynalite forged 4-piston calipers
  • Trackspeed Gen2 11.75" Wilwood brackets
  • Trackspeed 11.75" rotor hats
  • Two Wilwood 11.75" rotor rings (directional vanes optional)
  • Trackspeed Stainless Steel Wilwood-specific brake lines
  • Brake rotor hardware, pre-drilled for safety wire (pre-assembled rotors optional)
  • Caliper bracket hardware


  • "Upgrade Kit" - full kit, minus calipers and SS brake lines 
  • Substitute Wilwood Dynapro4 calipers 
  • Substitute Wilwood Dynapro6 calipers 
  • Substitute Directional HD36 rotors 
  • "Mega Brake Kit" - Wilwood Superlite + Directional option 
  • "Superlite Upgrade" - Superlite calipers + brackets only. Will only fit Trackspeed Gen2 11.75" rotors. 
  • Pre-assembled and safety wired brake rotors