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Old 12-04-2011, 11:24 PM   #1
HoboBob
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Subaru Stars 2.5i > 06/07 WRX Brake Upgrade

I know that there are tons of threads on this topic I can't find any for the 2.5i. What would I have to change to make the 06/07 WRX brakes fit. I have the calipers already but I'm not sure what else I would need to swap out.

Hopefully I can make a write up on how to do it for 2.5i's so others can do it in the future.
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Old 12-04-2011, 11:31 PM   #2
EdHilario
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The fronts will bolt right up. The rears will either require you to use the 06/07 WRX dust shield or remove part of your stock one or bend it back. If you don't use their dust shield then you also have to get the 2-pot adapter.
Other than that, just make sure your wheels clear the calipers.
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Old 12-04-2011, 11:42 PM   #3
HoboBob
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Okay cool. Will the rotors work with the calipers, I thought the WRX had larger ones?
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Old 12-05-2011, 12:30 AM   #4
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Another question: Will 97-99 LGT wheels clear 4/2 pots?
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Old 12-05-2011, 01:30 PM   #5
FuJi K
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quick answer.. Yes they will bolt up onto your car. Minor modifications like said, rear dust sheild. With larger calipers means you need to have matching rotors. What do you think would happen if you ran those calipers on your 2.5i rotors?

I don't think thos '97-99 LGT wheels will clear without the use of spacers to move the spokes further out from the pistons of the calipers. 2.5RS 98-00 wheels will clear.
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Old 12-05-2011, 09:24 PM   #6
EdHilario
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I thought you had the 06/07 WRX rotors already but if not then grab some.
Those wheels won't clear without spacers in the front.
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Old 12-05-2011, 11:17 PM   #7
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Awesome guys thanks for the info, answered everything I needed to know. Hopefully I can get these on sometime soon.
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Old 06-02-2016, 05:41 PM   #8
Silentblue
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Sorry for dusting this old thread off but all of my research on this topic has given me a lot of mixed answers anyway would you need to swap the brake master cylinder as well? (07 wrx to 07 impreza) because you're going from a 2 puck to a 4 puck in the front and a 1 puck to a 2 puck in the rear my understanding is with bigger brakes they need to allow more fluid pressure so I think I would need to swap the master cylinder and if so would I need to swap the ABS module too? Also would it need to be reprogrammed to run properly?
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Old 06-03-2016, 07:10 PM   #9
HoboBob
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I did end up doing this swap. You DID NOT need to swap the master cylinder. What I ended up swapping was the calipers, brake lines (optional), rotors, and dust shields. The dust shield was the most difficult part being that you had to disassemble the entire rear hub and parking brake, but it wasn't too bad.

Over all there weren't too many problems and the swap was well worth it. Highly recommended.
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Old 06-05-2016, 10:48 AM   #10
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Awesome Im doing a full swap so I'm not worried about parts lol this makes it a lot easier
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