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Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.


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Old 03-14-2018, 07:11 PM   #1
stlgrym3
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getting only front BBK?

has anyone done this? will it be too weird to rock BBK up front and not rear?
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Old 03-14-2018, 07:50 PM   #2
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Most reputable kits are engineered with conjunction of a oem rear calipers. The bias of most brembo, alcon, and ap racing complement the stock rear set up, depending on which kit you choose from whichever brand. If you go with the bigger 6, 8 pot kits, your chance of altering the bias increases and you will need a rear bbk, proportioning valving to balance the bias. @stlgrym3
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Old 03-14-2018, 07:54 PM   #3
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4 POT 326mm or 355mm front Brembo or Stoptech, do those work with our stock rear brakes?
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Old 03-14-2018, 08:13 PM   #4
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The Brembo Gt system works great with the stock rear end, this is the 4 piston 326. Rotor size will only increase weight, if you get a 355 kit with more pistons than your bias will be affected.
Stoptech st40, the 4 piston kits work as well but I forget how much forward it moves the bias. A 355 rotor would also just increase weight on a stoptech kit as the caliper stays the same.
I believe Counterspace Garage offesr the Brembo Gt system and can help you with specific numbers and information to make the right decision. Ft86speedfacotry has a brembo gt kit too and stoptechs.
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Old 03-14-2018, 08:31 PM   #5
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yeah, i was looking at those on FT86speedfactory as well. not sure i want to pay additional 2k or so for the rear if i don't have to.
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Old 03-14-2018, 09:24 PM   #6
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No need, just do the front. What are you doing with the car to need the BBK?

Last edited by skylinekin; 03-14-2018 at 09:35 PM.
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Old 03-14-2018, 09:36 PM   #7
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No need, just do the front. What are you doing with the car to need the BBK?
mostly for the look
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Old 03-14-2018, 09:46 PM   #8
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mostly for the look
Well in that case, you need front and rear in red
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Old 03-14-2018, 10:07 PM   #9
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Originally Posted by stlgrym3 View Post
4 POT 326mm or 355mm front Brembo or Stoptech, do those work with our stock rear brakes?
I run the ST40's with the 328 rotors. They are designed to work with the stock rear brakes, same pad compound all the way around.
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Old 03-14-2018, 10:41 PM   #10
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I run the ST40's with the 328 rotors. They are designed to work with the stock rear brakes, same pad compound all the way around.
did you paint the rear calipers to match the front?
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Old 03-14-2018, 10:45 PM   #11
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did you paint the rear calipers to match the front?
Nah, I don't really care about those types of things.
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Old 03-15-2018, 03:58 PM   #12
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mostly for the look
Look at RR Racing then.
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Old 03-15-2018, 04:01 PM   #13
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Originally Posted by Foxystyle View Post
Stoptech st40, the 4 piston kits work as well but I forget how much forward it moves the bias.
It doesn't with the 328mm rotor. On the Pointmeby blog it movies it rearward just under 1%. One of the reasons this kit and AP were the only ones I even considered.
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Old 03-15-2018, 05:07 PM   #14
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Originally Posted by stlgrym3 View Post
has anyone done this? will it be too weird to rock BBK up front and not rear?
I do. RR Racing Sport Performance front BBK with OEM rear. Here's a pic I took last year:



I don't think it looks bad but it's obviously non-standard and it does poke at my OCD nerve a little that the front and rear don't match but it's a matter of function over form for me. I track 4-8 times and participate in 6-10 autocross events per year and running STI rotors and standardized brake pads means my consumables last longer and are cheaper to replace. Literally, my front BBK brake pads are cheaper than my OEM rears.

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mostly for the look
If you are only after the appearance, you should really get front and rear. As I mentioned, BBK front with OEM rear looks kind of cheap. If you are never going to do anything like track work, I'd recommend you look at whatever is as cheap as you can find. You can do the full STi conversion for the same amount as a proper front only, I'd just never recommend it for anyone who is going to do any sort of performance driving.

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