V8R Stoptech 11.75" BBK
Thread Starter
Joined: Jul 2006
Posts: 3,310
Total Cats: 1,236
From: San Diego
Needs 5mm spacer and then it's gravy.
I ran my first race with the new V8R 11.75 STR42's last month. I finally have the pedal I had always dreamed of in my Miata. I could not be happier with the setup! When combined with a 1" master and sport rears the modulation was perfect. Pad life is looking good too. I got about 5 sessions on the setup and still have a ton of pad left. Pad thickness is similar to Dynapro radial.
The new rears look great!
The new rears look great!
Thread Starter
Joined: Jul 2006
Posts: 3,310
Total Cats: 1,236
From: San Diego
Oh yeah, I should probably post some pics 
V8R/Stoptech STR21 rear caliper. Race only setup (no e-brake). Fits over Sport rotor, or in my case, V8R's 2pc rotors that are made to match factory Sport rotor dimensions.
Pads are PFC 11's to match the fronts.

V8R/Stoptech STR21 rear caliper. Race only setup (no e-brake). Fits over Sport rotor, or in my case, V8R's 2pc rotors that are made to match factory Sport rotor dimensions.
Pads are PFC 11's to match the fronts.
Last edited by ThePass; Jul 12, 2017 at 01:01 PM.
Some wheels won't fit the 11.75 without spacers so it's good to have the smaller option. And I certainly couldn't say 11.75 are proven over 11" when an optimized system is always the smallest possible setup that will work for the hardest conditions it will see. You want smaller and lighter whenever possible, agree? I know guys that change calipers and/or rotors on all four wheels because of a particular track where a larger rotor/caliper is not needed for thermal management.
9mm larger radial difference is noise level for thermal capacity and brake torque (if ring weights are the same) so it must come down to vane design & cooling efficiency if there is ANY difference between these two options.
9mm larger radial difference is noise level for thermal capacity and brake torque (if ring weights are the same) so it must come down to vane design & cooling efficiency if there is ANY difference between these two options.
Last edited by Jumbosrule; Jul 11, 2017 at 05:44 PM.
Thread Starter
Joined: Jul 2006
Posts: 3,310
Total Cats: 1,236
From: San Diego
Fixed my previous posts' images that had gone down.
Pics of the rear V8R/Stoptech STR21 kit to compliment the front:


Pics of the rear V8R/Stoptech STR21 kit to compliment the front:


Joined: Apr 2014
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