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Discussion Starter #1
I just completed upgrading the stock brakes on my 2011 WRX to Brembos and thought I'd share my experience.

The project began when I was able to score a pair of front Brembos off a 2004 STi and a pair of rear Brembos off a 2008 STi.

The guy who sold the fronts to me was going to rebuild and repaint them, but decided last minute to go with a set of 2008 STi Brembos. As a result, he was willing to let me have this set for a very good price. He had already stripped the paint off the calipers, which was great for me since I wanted to repaint them to match the rears anyway. He also included a Brembo rebuild kit in the purchase price.

The rear calipers were a real find. They were practically brand-new because the guy who sold them to me took them off his 2008 STi as soon as he bought it and replaced them with a BBK. So these had no wear on them at all.

This is what they looked like when I got them:



The next step was to get the front calipers repainted. I got them powder-coated glossy black to match the rears:



I decided to pair the Brembos with a set of DBA 4000 ClubSpec T3 rotors and Stoptech Street Performance brake pads. I really like the look of the new rotors:



The guys at KNS Brakes were extremely helpful. They knew exactly which rotors I needed to get: 2004 STi front rotors and 2008+ STi rear rotors. The DBA rotors were already dual-drilled for 5x100 bolt pattern, so they were simply bolt-on.

Now that I had all the components together, it was just a matter of installing them on my car. The guys at Yimi Sport Tuning took care of that for me.

Installing the front calipers and rotors was a very straightforward process:



The rears, however, were more complicated. The stock rear rotor dust shields are too small for the larger DBA rotors to seat properly. So, the lip all the way around and portions of the dust shield itself had to be cut off for proper fitment. On the other hand, once the rotors were taken care of, the 2008 rear STi Brembos bolted on my WRX with no problems whatsoever:



Once everything was installed, the next step was to flush the lines and replace the brake fluid. I decided to go with Motul RBF 600.

After bleeding the lines, it was time to reinstall the stock rims. FYI, in my case, the stock 2011 WRX rims did NOT clear the front Brembo calipers without scraping. A set of 3mm spacers took care of that problem.

Here are a couple of pics of my car after everything was complete:




This Brembo conversion was a long-time desire of mine, ever since I got the car. I must say it feels great to finally get it all done!
 

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Nice job man, looks good.
 

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So the stock 17" rims cleared the rear calipers? I had heard that the 3G STI calipers needed an 18" wheel. I may have to look at this again.
 

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Nicely done! How many threads/turns did you get with the 3mm spacers on?
 

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So the stock 17" rims cleared the rear calipers? I had heard that the 3G STI calipers needed an 18" wheel. I may have to look at this again.
Yup, the stock 17x8 rims cleared the rear Brembos with no problems. It's the fronts that are tight.

Nicely done! How many threads/turns did you get with the 3mm spacers on?
To be honest, I'm not sure. But I was watching the guys at Yimi Sport put the wheels on, and they didn't seem to indicate there was any problems getting the nuts on firmly.
 

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Looks good! Notice an improved performance in braking yet? Brembos on all STIs are basically the same models, so there's no reason why the 08+s would need an 18in wheel if all the others required only a 17in wheel.

You put the spacers on all 4 corners correct?
 

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Discussion Starter #9
Actually, I only put the spacers on the front to clear the Brembos. The rears I left alone. The spacers are a stop-gap measure until the set of 18x8.5 Hyper Black Rota Grids I ordered arrives.
 

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Maybe I missed this, but did you need special rotors to get the parking brake working?
 

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Discussion Starter #11
No, the drum on the DBA 4000 rear rotors are pretty much the same size as the stock rotors, so the parking brake works as is. I do have to lift on the parking lever a bit more now than before, but that can be adjusted. In any case, the parking brake engages firmly with the new rotors.
 

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Actually, I only put the spacers on the front to clear the Brembos. The rears I left alone. The spacers are a stop-gap measure until the set of 18x8.5 Hyper Black Rota Grids I ordered arrives.
Gotcha...was just thinking of AWD complications...usually any kind of difference can put added stress on the AWD system, similar to having two axles with different offset, or different width like a staggered setup, etc. Probably not the best idea to run long with that.

You gonna throw some stickers on the front calipers to match the rear?
 

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Synolimit wouldn't have gone this route...
 

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Synolimit wouldn't have gone this route...
A nice APR wing and splitter are the best for providing braking power.
 

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First of all, very nice work. It looks great.

I thought a full Brembo conversion would have required a different master cylinder and brake lines?

I would consider putting the spacers in the back as well. In a performance situation, I would imagine the front wheels being wider than the rears will be a draw back. If anything, rears usually sit wider on performance cars.
 

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Discussion Starter #18
You gonna throw some stickers on the front calipers to match the rear?
I would like to... In fact, I already have heat-proof STi decals I ordered from eBay, but I don't have an easy way of taking off the wheels to get at the calipers right now. I may have to wait until I get new wheels installed (unless someone who lives close to San Fernando Valley, CA, can help me with this, wink, wink!)

Looks good! Notice an improved performance in braking yet? Brembos on all STIs are basically the same models, so there's no reason why the 08+s would need an 18in wheel if all the others required only a 17in wheel.
The new Brembos don't give me any more stopping power, but what it does give me are: (1) more initial bite so I don't have to depress my brake pedal as much as before, (2) total elimination of the "mushiness" I felt with the stock brakes, and (3) increased confidence in my brakes which enhances my driving experience especially when I do canyon runs.

The stock 17" rims do clear the Brembos in the sense that their radius is large enough to fit the calipers inside, but the curvature of the spokes is not enough for the wheel to spin without scraping the calipers. Not only am I getting 18" rims, the rims are of 2004 STi fitment which should ensure that they clear my Brembos.

Synolimit wouldn't have gone this route...
This must be some inside joke I'm unaware of.

First of all, very nice work. It looks great.

I thought a full Brembo conversion would have required a different master cylinder and brake lines?

I would consider putting the spacers in the back as well. In a performance situation, I would imagine the front wheels being wider than the rears will be a draw back. If anything, rears usually sit wider on performance cars.
Thank you!

It is my understanding that the 08+ WRX/STi share the same size master cylinder. In any case, my Brembos work just fine with my stock master cylinder and the Stoptech stainless steel lines I installed previously.

For now, I'm satisfied with running spacers just on my fronts. The spacers are a stop-gap measure anyways, just until the 18x8.5 Hyper Black Rota Grids I special-ordered arrive. Once I swap out the wheels and shoes, I'll most likely be selling the spacers and stock wheels to the highest bidder. :D
 

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First of all, very nice work. It looks great.

I thought a full Brembo conversion would have required a different master cylinder and brake lines?

I would consider putting the spacers in the back as well. In a performance situation, I would imagine the front wheels being wider than the rears will be a draw back. If anything, rears usually sit wider on performance cars.
I believe the master cylinder only needed swapping in the previous generation...as the OP says, it seems to be the same.

However on the Subaru symmetrical AWD system, larger wheels in the back is not beneficial. It messes with the correct power transfer properties if you have wider on either the front or the back since it creates more traction. Not good either way. That's why Subaru has all the same size wheels with the same offset on the car to begin with...

I would like to... In fact, I already have heat-proof STi decals I ordered from eBay, but I don't have an easy way of taking off the wheels to get at the calipers right now. I may have to wait until I get new wheels installed (unless someone who lives close to San Fernando Valley, CA, can help me with this, wink, wink!)

For now, I'm satisfied with running spacers just on my fronts. The spacers are a stop-gap measure anyways, just until the 18x8.5 Hyper Black Rota Grids I special-ordered arrive. Once I swap out the wheels and shoes, I'll most likely be selling the spacers and stock wheels to the highest bidder. :D
Easy way? How hard is it to pull out your jack, break loose your lugs, crank it up a few times and pull the wheel off? Anyone can do this anywhere! :rotfl:

But what I was getting at above is that with having the spacers only on the front, you are changing the dynamics of the AWD system...you could actually be causing harm to the differentials...
 

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No, the drum on the DBA 4000 rear rotors are pretty much the same size as the stock rotors, so the parking brake works as is. I do have to lift on the parking lever a bit more now than before, but that can be adjusted. In any case, the parking brake engages firmly with the new rotors.
Kool. I did the upgrade on my 07 but I had to get special DBA rotors to match the parking brake drum pad. I just took an air chisel to the rear dust shields. Off in 5 min.
 
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