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Discussion Starter #1 (Edited)
Hello,

RacingBrake is pleased to be a sponsor of this forum to present our complete brake replacement/upgrade option for Focus RS.

This Focus RS brake development should be credited to Chris M. - A die hard believer of RB brakes on his MK4 Golf R. He stopped by our shop to show us his brand new RS about 6 weeks ago and this is how the development initiated.

Here is what we have come up with.


Please note the rear disc (solid) is a new tool, so the rear rotors lead-time is longer than normal (6-8 wks). Other items/packages are either on hand or 4-6 weeks leadtime.

Thank you for your reading and please feel free to advise if you have any question.
 

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Someone correct me if I am wrong but RB maybe the only company that is offering a 2-piece rotor for the rear. Willwood sells one but you also have to buy their calipers.
 

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Someone correct me if I am wrong but RB maybe the only company that is offering a 2-piece rotor for the rear. Willwood sells one but you also have to buy their calipers.
Saw that. You should buy a set of rears and report back. :adoration:
 

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Saw that. You should buy a set of rears and report back. :adoration:
The ROI on 2 piece rear rotors is very low. I'm getting the cheapest decent set of 2 piece fronts at some point (DBA, Girodisc, RB, whatever) from a reputable mfg.


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Better cooling, hub bearing life, possible savings with ring only replacement (which may be the case here as they use Corvette rings).


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Ring only is almost never cheaper. Some of the cheapest wilwood rings maybe. RS OEM rotors are like $50 a pop up front.

Cooling, lifespan and weight are good reasons. Weight is a big one.
 

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Ring only is almost never cheaper. Some of the cheapest wilwood rings maybe. RS OEM rotors are like $50 a pop up front.

Cooling, lifespan and weight are good reasons. Weight is a big one.
I haven't priced OEM RS but $50 sounds low. I'll take your word on it though. Still good ROI even without it for unsprung weight alone..


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I haven't priced OEM RS but $50 sounds low. I'll take your word on it though. Still good ROI even without it for unsprung weight alone..


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$51 from the dealer. I'm sure they can be founder cheaper elsewhere long term - at least I'd hope so! Dealer should never be the cheapest source haha
 

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Discussion Starter #18
The rear two piece is being offered as an option. Aside from Focus, other popular motorsports cars that come with solid (non ventilated) rear discs are S2000, WRX (BRZ/FRS), Miata MX5 etc. which RB offers rear two piece rotors (stock size or oversize) for all, and for S2000 rear we even converted from original 14mm solid to 17mm ventilated disc.

So check around in these communities and ask those who had their rear upgraded and see if it's an worthwhile investment; whether you are looking for the "Look", "Performance", or "Saving"

RB rear two piece rotor is a very popular upgrade for MX5 (NA/NB) owners since it was fist introduced in early 2000, after 15 years these rotors still running and very few are buying replacement discs.
 
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