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One and only BBK factory upgrade for RWD E350 Coupe
Alright, so instead of waiting for answers in this deadass C207 forum lol, I decided to do some research and after couple bumps, I was able to find the bolt on fitment Front BBK for my 2012 E350 RWD coupe with AMG sports package.
No special bracket required, cost was quite cheap IMO, and clears factory 18" AMG wheels.
There are known options for E550 coupe, but no information anywhere online, for pre-facelift E350 RWD, at least bolt on factory, not aftermarket or using custom brackets.
Caliper is from 2014 CLS400/550, 4 piston caliper with 360mm 36mm fitment.
Purchased on ebay used with lines etc intact, for $400 delivered.
Pistons and calipers were ok, as the caliper was from a car with only 40k miles, but decided to replace the boots and seals since it will be rebuilt and freshly painted.
Now, the compatible 360mm rotors for this CLS400/550 caliper fitment DOES NOT WORK on E350, due to major difference in overall rotor height.
It wouldnt clear the calipers.
So after researching, I was able to find 360mm Brembo rotors for SL450/550.
This rotor retained 360mm x 36mm fitment needed for this caliper, and was the closest fitment to the OEM E350 rotors.
fills the ugly gap between the wheel and factory size rotor (322mm).
Brembo part number is 09.B474.11
$220 delivered for a pair.
They fit perfectly and i am more than happy.
They look almost as good as my 390mm 2 piece brembos on my W213 E63S.
In the next few days, I will rebuild, and refinish the caliper in Gloss Black with white "Mercedes-Benz" lettering.
Just thought I share this information, if there was anyone looking to upgrade the look of their brakes on their E350 RWD.
Last edited by Nbxjskamg; Jul 28, 2023 at 10:56 PM.
How come you didn’t use the C63 360mm rotors? It is shared with the E 550 Sedan that uses the same rotors. The CLS rotors are different yes…
I have a E 550 Coupe that uses the same C63 Rotors from factory. I’m hoping I can just buy the calipers and save some money because I already have the big rotors. Seems odd you had to grab the pair of SL rotors as they’re almost the exact same size.
I’m using Brembo 09.B769.51… do you think they’ll work? Thanks!
Ok So I just did all this work and actually found that you arrived at the same conclusion.
The difference between the C63 rotors is that they are HEAVIER, and don't use the newer PVT venting that the SL550 ones do. The Sl550 ones are 0.1mm thicker than the 64.5 spec that the C63 and your original C207 ones are. This is apparently well within tolerance.
Also , oddly enough the better, lighter SL550 rotors are cheaper than the C63 ones as well. Double Win.
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