Rear brake upgrade without bracket possible?

skatefanatiker

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Hello,
I am planning on upgrading my Stock GT brakes. After much searching I came to the conclusion, that the Shelby GT500 14" is the way to go for me (in the front).
But for the rear I am clueless. I hate the looks of the small rotors and want bigger ones. The only thing I found was bigger rotors with the stock caliper and a bracket.
BUT here in Germany we need a certificate for EVERY part which didn't came on stock cars and thats why I can't use the bracket, it is not allowed here...
So my Question: Is there any bigger OEM Mustang brakes for the rear, which I can mount without a bracket?

Thanks from Germany!
 

86GT351

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There is automatically going to be a bracket for any larger rotor. There has to be because it relocates the caliper outwards.
 

yote0

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Use all of the OEM GT 500 parts, not just the rotor, and you won’t need an aftermarket bracket.
 

skatefanatiker

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What i have read so far the GT500 have 13.78" rear rotors. What do i have to change to make them fit then? Which parts do you mean?
 

Racer47

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The 2013 gt500 rear brakes have a bigger caliper bracket. You'll need to pull the axles to get the old brackets off and new on. Your stock rear calipers will bolt to these and they will allow the use of the 13.78" rotors. The $91 parts below brake brackets.jpg
 

pass1over

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That's a shame about the bracket, so much easier than pulling axles, etc. How would they know it didn't come on the car like that from the factory?
 

Racer47

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^^^ by looking at the chunk of aluminum bolted between an obviously stock bracket and obviously stock caliper.
 

pass1over

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so paint the bracket? I mean, there's no way they can know what's oem on every single car that exists. I get that it's probably not messing with, but I don't see how they would know. I doubt they would even notice it.

Unless like you stated you have a shiny piece of aluminum bolted onto a rusty axle housing bracket. That's an easy fix though.
 

skatefanatiker

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Yeah thats a shame.. The problem is not riding with it, most people don't notice changes on imported cars. But in case of an accident where you are involved, the cars gets inspected and if they found something like that, you are guilty even if you didn't do anything wrong. Like someone crashes into you, you are as much guilty as the other person.
 

GriffX

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so paint the bracket? I mean, there's no way they can know what's oem on every single car that exists. I get that it's probably not messing with, but I don't see how they would know. I doubt they would even notice it.

Unless like you stated you have a shiny piece of aluminum bolted onto a rusty axle housing bracket. That's an easy fix though.
Well, you (or the TUV guy) sees that the part is newer than the rest. If a Ford logo (or nothing like on my LCAs from J&M) is on it you have usually no problem (and should be black, the blue Ford K-springs, no way). If some different brand is castet in they have questions and then the fun begins.

And, if you have an accident and this part can have some effect on the accident itself your insurance can get the money back from you. 2nd the cops in some cities like Hamburg have to make money for the city treasury and fine you if they see some shady parts. They can even fine you here for the OEM exhaust because it's too loud for Germany.
 

RoushStage2

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The GT500 Rotor swap is exactly what I did to my 2014 Roush Stage 2 (Roush Upgraded GT). This is an older list of the parts that I bought from a Ford Dealer after checking several vendors for pricing. These parts are all stock on the 2013/2014 GT500. Below is the list that I worked from to price check and eventually order my parts for the conversion. Also posted some photos of before and after the upgrade. I had a Ford Dealer's shop make the Swap. If you plan to do it yourself don't forget to get the proper rear differential fluid because you have to pull both axles to install the new brackets.

Here is a write-up on the conversion process with steps and photos.

Here are a couple of links to forum threads that helped me get this done.


Parts List
Brake Parts.jpg



Before (Small Stock Rear Rotor)

Before3.jpg

After (Larger GT500 Rotor)
after2.jpg

Before
BeforeFull.jpg

After Matches up better with the 14" Front Brembo Rotor.
AfterFull2.jpg


Main Parts compare. Top is the GT500 Rotor and Bracket, Below is the GT Rotor and Bracket. This photo was found on the web, not my parts.
ImageUploadedByMustang Evolution1400739807.336532.jpg
 
Last edited:

RoushStage2

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Glad I could help. I am very happy with my upgrade. Looks was my main reason, but also will help with brake fade if track, autocross, or are traveling where long steep slopes are involved. Larger rotor gives better disbursement of heat. I did not really notice much change how the car brakes.

Good luck with your project!
 

GriffX

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One tip, buy semi-metallic or kevlar-organic pads and no ceramic or low-dust types. They are no fun on the Autobahn they need a long cool down time you sometimes don't have in Germany (TUV usually doesn't look on the pads).
 

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