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The rear pads very little wear and rear rotors had no measurable difference as you suspected.
I may play around a little with rear pad compounds next time.

j
I like where you are going with this set-up! Now that you have a solution for the front brakes that can handle the stress, it will be interesting to see how a slightly more aggressive pad at the rear affects initial brake bite and chassis balance/dynamics under hard braking.
 
Rear rotor has oversized from 300 to 350mm comparable to the front from 350 to 380mm.

Brake pressure is determined by the size of pistons than the (body) size of caliper.
Sorry, took me a while to get back to this. I'm not a brake expert so bare with me please. I may very well be missing something or not fully understanding it. I only started down this path cause I was surprised to see with such a killer upgrade to the front that the rear seems (mostly) unchanged.

As you stated, the clamping force is dictated by the size of the pistons. Surely the addition of 2 more pistons over stock is to offer more clamping force yes? Or am I not following correctly, do the RB calipers and RB carbon rotors not offer any additional clamping force? If they do, as I suspect, then my question still stands. Without the addition new calipers to the rear, the clamping force at the rear has remain unchanged, so how does this monster brake setup not alter the front/rear brake bias? Or is it just not enough to matter?
 
Sorry, took me a while to get back to this. I'm not a brake expert so bare with me please. I may very well be missing something or not fully understanding it. I only started down this path cause I was surprised to see with such a killer upgrade to the front that the rear seems (mostly) unchanged.

As you stated, the clamping force is dictated by the size of the pistons. Surely the addition of 2 more pistons over stock is to offer more clamping force yes? Or am I not following correctly, do the RB calipers and RB carbon rotors not offer any additional clamping force? If they do, as I suspect, then my question still stands. Without the addition new calipers to the rear, the clamping force at the rear has remain unchanged, so how does this monster brake setup not alter the front/rear brake bias? Or is it just not enough to matter?
It's not just the number of pistons, but also the bore size of them that matters. Gonna need all stats for both calipers to determine how much change there is in clamping force.
 
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See this long term track review on GT350 (RS's big brother) how RB CCM rotors and sintered pads performed and last on tracks.

https://trackmustangsonline.com/threads/carbon-ceramic-brakes-theyre-on.12573/page-2#post-202847

It's half way through the 2018 track season and I've put three more track days on my CCB's.

My opinion of them hasn't changed. I love these things. They are the best brakes I've ever driven with, and I've had AP Racing, Brembo Racing, Stoptech and a variety of OEM setups.

For track work, the "streetable" sintered pads are perfect. Super consistent delivering massive stopping power, excellent modulation and consistent brake feel from cold to hot. As for wear, after six track days, the total pad thickness (two pads pressed face to face) has gone from 34.0 mm to 33.0 mm. That's consistent with last year's level of wear. One thing to note - these pads can be noisy. When they're hot they're quiet, but cold, they make a soft whirring sound and the occasional squeal. I've found that a few minutes with a file to chamfer the edges of the friction material seems to reduce the squealing to a level that I can live with.

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There is a new addition to the setup for this year - I picked up a set of Racing Brake rear rotors. They maintain the hand brake function (unlike virtually every other aftermarket rear rotor for the GT350) and they are a direct fit into the existing setup. They're 380x28, which is 2mm thicker than OEM, but the OEM calipers take new pads with no problem. I'm running mine with Pagid RSL29's and the brake balance with the front is excellent. They're directional rotors with large vanes so they cool really well. You lose a couple of pounds of weight, but it's not a major reduction - it's all about shedding heat for these things.

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I realize this thread is a little over 3 years old, save for @axelr's more recent post. What wheels are those, which fit those larger RB calipers? I'm seriously contemplating picking up the Brembo 6 piston upgrade kit, or RB's. RB's can/is CCM, and Brembo's is not, so, there's that significant difference. If I'm going to spend maybe $5k on Brembo, I honestly might as well stretch and get the RB's, which just simply seem far superior.
 
I realize this is a little over 3 years old. What wheels are those, which fit those larger RB calipers? I'm seriously contemplating picking up the Brembo 6 piston upgrade kit, or RB's. RB's can/is CCM, and Brembo's is not, so, there's that significant difference.
Oz Racing Ultra Leggera I reckon......
 
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