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Cadillac CTS-V Calipers (2009 up) Brembo J56 Caliper

Old 01-21-2019, 07:25 PM
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Cadillac CTS-V Calipers (2009 up) Brembo J56 Caliper

Hey guys so I am more building my rx8 into a show car and was looking to do a BBK that would not only be a bit cheaper than the run of the mill BBK kits, but also to get a full set of calipers that are in yellow.

You can find CTS-V calipers reasonably priced even new and considering pulling the trigger.

First I know that I will likely do a mounting bracket adapter of some sort that is not an issue.

The issue I am seeing is the CTS-V is a 5x120 bolt pattern. Obviously the RX-8 is 5x114.3 so in theory I will just need to find a 380mm front rotor and a 365mm rear roor (CTS-V rotor sizes) in a 5x114.3 and make the caliper brackets center onto the rotors? Or is there a possiblity to take the rotors to a machine shop and machine a 5x114.3 into them? Not sure if having two bolt pattern holes in a rotor is good (or safe)

The other route to go to a two piece front and rear rotors, but that is extremely expensive. But I consider it the last resort.

Thanks!
Dustin

Links for Ref.
CTS-V: https://en.m.wikipedia.org/wiki/Cadillac_CTS-V

Caliper set: https://www.ebay.com/itm/New-Cadillac-CTS-V-6-Piston-Yellow-Brembo-Calipers-Front-Rear-w-pads-pins-ZL1/131273251714?fits=Model:CTS%7CSubmodel:V%7CMake:Ca dillac&hash=item1e907edb82:g:9NwAAOSwxCxT8nSP&redi rect=mobile
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Old 01-25-2019, 10:58 AM
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Old 01-27-2019, 10:07 AM
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Compstibility

Originally Posted by Ekim View Post
Thanks for this. Do you know of the compatibility of the mounting if the 240 to the rx8?

I found a 365mm wilwood front brake kit with 2 piece rotors for 1799 and its temping depending on how of a pain and price this turns into .
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Old 02-27-2019, 11:01 AM
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I cant guarantee it'll be perfect... I'm actually diving into this mod myself, so I'll let you know in a week or so how it went. I'm waiting on some rotors I'm hoping will work.

There's definitely a couple small mods I'm expecting, do we'll see...
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Old 03-27-2019, 12:48 PM
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Update:
Looks like this is going to work.

Only "mod" was I had to have my Fab Guy open up the Rotor Center Bore to fit the 8, but I'll probably be installing everything next week sometime. I try to take a bunch of pics.

Note: This is definitely not a "Performance Upgrade" and is very much more for Show.
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Old 03-28-2019, 08:54 AM
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Awesome!

Originally Posted by Ekim View Post
Update:
Looks like this is going to work.

Only "mod" was I had to have my Fab Guy open up the Rotor Center Bore to fit the 8, but I'll probably be installing everything next week sometime. I try to take a bunch of pics.

Note: This is definitely not a "Performance Upgrade" and is very much more for Show.
Great! I am curious to see the results!

I got quoted for a r1 concepts bbk at 2100 for fronts. Wilwood said they will also do a custom color for their bbk.

What are you doing for mounts for the calipers?
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Old 03-28-2019, 11:06 AM
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Originally Posted by Fickert View Post
Great! I am curious to see the results!

I got quoted for a r1 concepts bbk at 2100 for fronts. Wilwood said they will also do a custom color for their bbk.

What are you doing for mounts for the calipers?
Its actually a combination of 2 mounting brackets. Sounds sketch, but from the test fit I did, fitment is right on. Very beefy. I might have my Fab Guy just weld them together after I completely build out this kit.

The mount are the 2 links I attached earlier in the thread.
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Old 03-28-2019, 12:13 PM
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Originally Posted by Ekim View Post
Its actually a combination of 2 mounting brackets. Sounds sketch, but from the test fit I did, fitment is right on. Very beefy. I might have my Fab Guy just weld them together after I completely build out this kit.

The mount are the 2 links I attached earlier in the thread.
Interesting. Please post up photos when you can.
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