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Old 03-26-2019, 10:35 AM   #1
The Wazu
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1997 Legacy Outback

Default 08+ WRX STI Rear calipers

Yes Iíve done my research to the point where either Iím an idiot and canít find the correct post or itís simply not out there.

I have a 2004 WRX and I have a set of 08 STI calipers. The fronts bolt up without a problem. However the rear calipers line up just fine with slight modification. I ground the hub/backing plate down ever so slightly and the caliper actually lines up to the factory bolt holes. The only thing is off is the position of the caliper and Iím assuming because the hub on the new style STIís have a thicker hole for the caliper mounting bolt to go through. My question is, I only see people telling me these calipers wonít bolt up or work, since I did grind down my hub or knuckle/backing plate, would they still work if I get the spacing correct?

Are there conversations out there if anyone doing these? I got these calipers for a steal and would like to use them if at all possible.
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Old 03-28-2019, 11:29 AM   #2
The Wazu
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1997 Legacy Outback

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Nothinggggggggg???? Címon someoneís gotta have some sort of answer.
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Old 03-28-2019, 11:32 AM   #3
Stretch18
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pandiculation

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I know people make kits for people to fit older brembos on the newer models, but not sure anyone makes the reverse. Try contacting KNS Brakes; if they don't have it, the might know if it's available somewhere...
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Old 03-28-2019, 04:08 PM   #4
The Wazu
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2004 Impreza WRX
1997 Legacy Outback

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Quote:
Originally Posted by Stretch18 View Post
I know people make kits for people to fit older brembos on the newer models, but not sure anyone makes the reverse. Try contacting KNS Brakes; if they don't have it, the might know if it's available somewhere...


Ahhhh okay okay. Thank you sir.
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Old 03-29-2019, 05:23 PM   #5
The Wazu
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1997 Legacy Outback

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Update: KNS knows nothing about this swap. Sooooo Iím going to mock everything up again and check measurements. Iíll fill ya guys in
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Old 04-05-2019, 07:01 PM   #6
lil'redwagon
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'08 G37 (S/C'd); '09 XF

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Any update on this? As far as I've been able to find (but it's confusing), is that I think the caliper would bolt up with a Kartboy bracket but then you'll have to get extra thick pads for the parking brake to make up for the 170 vs 190 mm parking brake drum. And you'll need 2004 STi Brembo rotors for the 5x100 bolt pattern.
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Old 04-05-2019, 08:03 PM   #7
jamal
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No, the hole spacing on the new sti caliper is the same as the old 1-pots, so it would not line up with the bracket. I think it will actually even bolt to the GD upright, but the rotor doesn't line up. As far as I know there is not currently an easy way to get this to work.
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Old 04-06-2019, 10:05 PM   #8
ddmme
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I could make it happen for you. I actually have a set of custom backing plates to fit the 2008+ rear Brembos onto the 05-07 STI using 05-07 STI rotors without any change to the parking brake. I could modify WRX backing plates to correct the offset and line the caliper up with the rotor. I sent a pm to you.

Last edited by ddmme; 04-13-2019 at 01:03 AM.
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