Order today for early July 2015 shipment.

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 Miata incredible braking performance in any situation.

Compare our 11.75" BBK to our competitors' 11.75" and 11" offerings. We feel that the value of this kit is unparalleled in the marketplace today.

Includes the following ($599):

• Wilwood Dynalite forged 4-piston calipers (6-piston calipers are available)
• 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
• 1L of ATE Typ200 Racing Brake Fluid

Upgrade kit ($374):

Full kit, less Wilwood calipers and Trackspeed brake lines

Pre-assembled/wired brake rotors: add $50
Directional rotors: add $150

Kit ships without pads to accomodate both street and track users.

Fits under these wheels:
-15x7 +25 Team Dynamics Pro Race 1.2
-15x8 +20 TRMotorsport C1
-15x8 +40 949Racing 6UL (4mm spacer required)
-15x8 +36 949Racing 6UL
-15x9 +36 949Racing 6UL
-15x10 +25 949Racing 6UL

Don't see your wheel listed? Ship it to us for a test fit and receive a $50 credit on your BBK. Contact us for details.



The brackets shown are production pieces. The rotor is a pre-production item without any coating. The rotors will be black hard-ano'd with etched logos.







Model of production rotor:

 

Could you create a package that includes rear brake lines or find a way to separately order ONLY rear lines? The front big brake package comes with brake lines but your goodridge brake line package is only available for four wheels.

 

Option added, thanks.

 

Sexy! Is the 599 an introductory price or will it be that price when I finally have the money next winter to upgrade?

Also, 15x8 Konig Dial in user here if you need a test wheel.

 

Really wish I'd known about this a month ago, before I picked up my 11" kit.

 

I take it this kit meets the requirement that the disc is centered between the front wheel bearings?

 

Well done Andrew.

You will be hearing from me!

 

$599 is MSRP. No intro pricing on this one.

Not sure who says that's a requirement. The brake rotor is a bit further inboard than the factory brake rotor is. I'm sure that having the rotor perfectly centered on the bearings is a nice thing to do, but in reality, it's more important that the rotor and caliper not hit immovable metal objects like the tie rods or wheels.

 

I believe he is referencing this post.

Edit: to be clear I have no horse in this race, just passing on the link

 

Do you ensure that your wheel is centrally located over the hub bearings too? No. Nobody does. Fitment within the chassis dictates wheel placement, just as it dictates brake rotor placement. Unless you are substantially altering the moment being applied to the wheel bearing, it's a non-issue. We put the rotor in a spot where it hits the least amount of **** possible.

 

To satiate my own curiosity, I took some measurements off a stock NTN hub, an OEM Sport rotor, and our new Gen2 rotor.

Bearing races: ~0.900" thick each
Distance from hub flange face to center of bearing: ~1.200"

Sport rotor offset: ~1.085" (center of rotor to hub flange face)
Trackspeed Gen2 rotor offset: ~1.215"

In closing:

• I don't think there's any merit to the idea that rotor offset alters bearing life in any way
• Mazda doesn't think there's any merit to the idea either
• If there is any merit to the idea, our rotor will improve bearing life over a factory Mazda Sport rotor

Hopefully that puts this silly issue to rest.

 

Please put this in your ad copy on M.net.

 

But then we won't be able to ever buy them because Andrew got lynched by the mob.

 

Does the added wheel clearance create any compatibility issues with your 2" brake duct baking plates?

 

No, and it shouldn't cause any issues with Singular's 2.5" or 3" ducts either. All the mockup was done on cars with brake ducts to ensure it wouldn't be an issue. It is very close, though.

 

What's the reasoning for using the dynalite caliper over the dynapro? Cost?

 

Is there any reason to upgrade from your original kit aside from the added wheel clearance? Do the DP6's clear 15x9 +36 6UL's with without spacers now too?

 

*flamesuit on*
Is there an option for red calipers?

 

I'd rather have Trackspeed Orange calipers.

 

Orange calipers with Trackspeed written on then would be a sweet option