will the sti brembos fit fr-s/brz?

[driver01]

i have the chance of getting my hands on the brembo calipers from the sti, anybody know if these will fit?

[Spaceywilly]

Nobody has the car yet to try it, but the brakes on the STI are on the back of the wheel and the brakes on the BRZ are on the front of the wheel so it seems unlikely. Also I don't think there's any chance the stock wheels will clear them so you'd need to pick up some 18s or 17s that clear the Brembos.

[Ranatsu]

i have a spare set so I can give it a shot once the car actually gets here.

[old greg]

Fit? Yes.

Work? Not really.

[blu_]

Originally Posted by old greg

Fit? Yes.

Work? Not really.

But wont they look cool?

[Godzpeed]

any brakes can fit and work on any car with the right bridge

[Guff]

Weren't the BRZ hubs from an 04 STi? Or was that disproven?

If they are, then you might have a decent chance at getting some 04 STi Brembos on there.

[Dave-ROR]

Originally Posted by Godzpeed

any brakes can fit and work on any car with the right bridge

Here's the problem, as has been explained on here many times already.

STI calipers are differential-bored. So the leading pistons are larger than the trailing pistons. When mounting on an STI, which has them mounted rearward of the axle, the leading piston is on the lower end of the caliper, and the bleeder is at the top. When you mount that to a BRZ, which has it's calipers mounted forward of the axleline, you have two options:
1. Keep the left caliper on the left side, and the right on the right.
2. Switch L to R and R to L.

The problem with option one is that the bleeder is at the bottom of the caliper, so you'll never get a good bleed.

The problem with option two is that the leading piston is now the small piston and the trailing is the large piston, so the brakes won't work as well as they should.

For those reasons, a post of "Work? Not really." is accurate. Will they technically work? Sure, will they work correctly or as well as they should? Not at all.

In any case, will they be an improvement on the street in terms of performance, absolutely not.

Feel, modulation, yes, but if you are an ABS braker, it'll stop just the same as stock brakes in the same distance given equal pads.

[Dave-ROR]

Originally Posted by Guff

Weren't the BRZ hubs from an 04 STi? Or was that disproven?

If they are, then you might have a decent chance at getting some 04 STi Brembos on there.

04 STI rotors would technically fit, I don't believe there was an indication that the hubs were 04 STi parts, unless those are the same as WRX. Not sure.

[Turbowned]

Import Tuner wrote an article saying they would swap over, and you could use a certain year STi front rotors with modified 08 rear rotors. Not sure what their source was.

I'm personally more interested in WRX 4pot/2pots. They'll clear 16" wheels, are aluminum and presumably cheaper than the Brembos to buy used. Anyone wanna speculate if those will fit?

[Godzpeed]

Originally Posted by Dave-ROR

Here's the problem, as has been explained on here many times already.

STI calipers are differential-bored. So the leading pistons are larger than the trailing pistons. When mounting on an STI, which has them mounted rearward of the axle, the leading piston is on the lower end of the caliper, and the bleeder is at the top. When you mount that to a BRZ, which has it's calipers mounted forward of the axleline, you have two options:
1. Keep the left caliper on the left side, and the right on the right.
2. Switch L to R and R to L.

The problem with option one is that the bleeder is at the bottom of the caliper, so you'll never get a good bleed.

The problem with option two is that the leading piston is now the small piston and the trailing is the large piston, so the brakes won't work as well as they should.

For those reasons, a post of "Work? Not really." is accurate. Will they technically work? Sure, will they work correctly or as well as they should? Not at all.

In any case, will they be an improvement on the street in terms of performance, absolutely not.

Feel, modulation, yes, but if you are an ABS braker, it'll stop just the same as stock brakes in the same distance given equal pads.

they are still just the lotus calipers from Brembo, Nissan and Mitsubishi uses the same one in different locations

[Dave-ROR]

Originally Posted by Godzpeed

they are still just the lotus calipers from Brembo, Nissan and Mitsubishi uses the same one in different locations

How does that refute the obvious evidence that they won't work correctly in this application? The calipers should only be used with the bleeders up top and the larger piston at the leading edge. Every car with fixed differtial bored calipers are setup that way for good reasons.

[Dave-ROR]

Originally Posted by Turbowned

Import Tuner wrote an article saying they would swap over, and you could use a certain year STi front rotors with modified 08 rear rotors. Not sure what their source was.

I'm personally more interested in WRX 4pot/2pots. They'll clear 16" wheels, are aluminum and presumably cheaper than the Brembos to buy used. Anyone wanna speculate if those will fit?

They should fit and work fine once you switch them L to R and R to L. They are not differential bored so you just have to swap sides with them to keep the bleeder on top.

[old greg]

Originally Posted by Dave-ROR

STI calipers are differential-bored. So the leading pistons are larger than the trailing pistons.

It's the other way around actually. There's normally more pressure/wear on the leading edge of the pad, so a larger trailing piston helps keep heat and wear evenly distributed across the pad face under hard braking.