i believe that the calipers are Greddy's BBK ..not sure if the manufacturer is the same as Brembo though. Like Brembos stamped with Greddy.

The tech articles on the greddy say sti. They are making a greddy bbk with 6/4 calipers according to the articles but no one as seen it yet as far as ive seen.

gosh....dave don't you think GREDDY SPECTRUM ELITE SE 6/4 is really excessive on that car? 4/1 & 4/2 have been just wonderful for me on my rx7, and with no issues of brake fade.

:word:

I imagine a strong 4/2 setup to be plenty for what this car should have to endure.

Really it's overkill as it already has a very strong 2/1 setup with large rotors. A BBK for this car will be good for enduros, but for sprints/HPDE/AutoX stock brakes, better pads, and sticky tires will slow you down plenty fast without the high price tag.

Lol I'm not suggesting the greddy bbk is needed. I don't think the sti gear is needed.

^^^This.

I'd guess that STI brakes may even hinder acceleration and cornering speed. STI front rotors are ridiculously heavy. I'd guess about 30 - 35 lbs each. Yes, each. Sure the calipers are lightweight, but the weight of the rotors kills any weight savings and then some.

I'd guess that the hot brake swap would be the Subaru 4-Pot calipers up front and leave the rears alone.

Then just run some good track pads, and a little air ducting and you're good to go.

Yep, the WRX 4 pots are made for the 11.6" rotor and are NOT differential-bored as far as I can tell by looking at pics of them being rebuilt, so you can swap them L->R and R->L to get the bleeders on top :thumbup:

That will give you better pad wear and better modulation without upsetting the brake balance any.

The next logical step for those who need larger front heatsinks is the 05+ LGT front brake conversion (the BRZ already has the LGT rear brakes) which requires (based on reading) the Calipers (complete with brackets), new pads and the bigger rotors.. would be a potential upgrade idea once you need new rotors anyways. Piston sizes are the same as the WRX (and we assume the BRZ) so brake pedal feel shouldn't change. This would change the brake balance as the front would have a lot more brake torque so more agressive rear pads may be needed to maintain that balance. Major changes in that balance can actually increase stopping distances which isn't a great trade off just to have more heat capacity up front..

unless you plan to do some serious track work with the car, as stated, the stock calipers and rotors should be fine with lines, pads and fluid. For those wanting to shave weight, switch to a floating rotors (I know the fronts already exist for this size but not sure on rears) and maybe snag the Subaru (not brembo) 4/2 pot setup though the rear would require a bracket (simple).

For a Brembo 4/2 pot setup, you are carrying more weight. It's sprung weight and rotational as well. So worse suspension performance and slower acceleration....to what extent, eh, I don't feel like working up the rough math :lol:

Having owned a 94 Impreza with a WRX swap that was fairly comprable to the BRZ (but made about 60% more power at the time of being RWD), base WRX brakes with pads and fluid will perform plenty well.

As stated above, those needing larger rotors for heat management, yes, the LGT would be the next step (and it needs the caliper bracket too IIRC) but I would get the BDA 5000 rotor for weight. I'd also do the same (or the Giro Disc or Performance Friction rotors) if going to the 'STi Brembos'....weight, save it where you can, without sacrifice.

He was also driving on Prius tires with stock fluid and stock pads.. just saying :) Plus if he's sponsored by GReddy and GReddy is going to make a BBK I'd make him say that too lol

I run longer session times than most here in a car with 10.2" single piston front brakes (and even smaller rear brakes) so I'm hard to convince on a "need" for very large brakes.

Yeah meant to point out that you need the full caliper with brackets. Edited my post to include that. :thumbup:

I think enthusiasts would be fairly content with these as an OEM upgrade:
http://subaruproparts.com/images/4potsgreen.jpg
(STi/WRX) :thumbup: