Foci RS Brembo Brake Conversion Help
Hi all
Ive stumbled across a few issues in my quest for better brakes and thought u lot would be the people to ask.
My aim is to fit the front brembos from a Focus RS, and Focus ST discs onto my humble orion .



Im gonna design and get machined a set of brackets to get the caliper in the correct position to work with the ST discs. The first dilemma is the brackets themselves. The Brembos use a M12 bolt to hold em to the hub, whereas my Rs2000 calipers use a M10 bolt. So question 1 is:
Do I make the brackets with two M10 holes (to attach to the hub) and two M12 holes
(for the calliper) or drill the hub out to 12mm and use M12 for all four holes?
Which will be stronger? Stronger is best really.
Qestion 2 is can I use std Escort/Orion hoses with the callipers? (Obviously they’ll be braided jobbies) What I mean is the std hose fits the calliper, so can I just buy some braided replacements or will I need custom made hoses?

And lastly Question 3 is because the ST discs are slightly thinner than the RS discs theres a bigger gap between the pads and the discs. Is this gap too big or will the pistons push the pads closer when they are plumbed in.

Thanks Everyone
Ive stumbled across a few issues in my quest for better brakes and thought u lot would be the people to ask.
My aim is to fit the front brembos from a Focus RS, and Focus ST discs onto my humble orion .



Im gonna design and get machined a set of brackets to get the caliper in the correct position to work with the ST discs. The first dilemma is the brackets themselves. The Brembos use a M12 bolt to hold em to the hub, whereas my Rs2000 calipers use a M10 bolt. So question 1 is:
Do I make the brackets with two M10 holes (to attach to the hub) and two M12 holes
(for the calliper) or drill the hub out to 12mm and use M12 for all four holes?
Which will be stronger? Stronger is best really.
Qestion 2 is can I use std Escort/Orion hoses with the callipers? (Obviously they’ll be braided jobbies) What I mean is the std hose fits the calliper, so can I just buy some braided replacements or will I need custom made hoses?

And lastly Question 3 is because the ST discs are slightly thinner than the RS discs theres a bigger gap between the pads and the discs. Is this gap too big or will the pistons push the pads closer when they are plumbed in.

Thanks Everyone
Regarding the pad thickness issue, you need to be careful there incase the pistons pop right out!!
Also, is your Master Cylinder up to it??
Incidentally, why did you go for ST discs instead of Focus RS ones?? Is it because you run 15" wheels?
Also, is your Master Cylinder up to it??
Incidentally, why did you go for ST discs instead of Focus RS ones?? Is it because you run 15" wheels?
The reason i chose the ST discs is because they cost me about £40 each were as the rs discs are about £160 each.
I was thinking about sendin em to brom but wanted to try meself 1st. Cant be that hard can it
or am i kidding myself
I was thinking about sendin em to brom but wanted to try meself 1st. Cant be that hard can it
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I would question the master cylinder size as well unless they are the same your going to have a soft pedal.
Also have a look at the 2005 Focus ours are shipping with 10.9' front rotors, disc thickness increased from .86 thick to .98. giving 17% greater pad area and
bigger caliper. It could be a cheap way to solve your problem.
Good luck.
Also have a look at the 2005 Focus ours are shipping with 10.9' front rotors, disc thickness increased from .86 thick to .98. giving 17% greater pad area and
bigger caliper. It could be a cheap way to solve your problem.
Good luck.
Originally Posted by b19bal
speak top brom
( and before yet another person asks i mean cozzybrom from zoo motorsport, that guy who says 4 words a day when ya meet him


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