The build: what's on this A45 S
| Item | Installed on this A45 S |
|---|---|
| Vehicle | Mercedes-AMG A45 S (W177) |
| Front rotor | STOPFLEX 380mm carbon ceramic rotor |
| Rear rotor | STOPFLEX 330mm carbon ceramic rotor |
| Axle scope | Front and rear CCB rotor upgrade |
| Brake pads | STOPFLEX high-performance ceramic pads |
| Wheels fitted | 19-inch |
| Hardware | Matching bolts and install fasteners |
Check clearance before you buy. This car ran 19-inch wheels, but diameter alone doesn't prove fit. A 380mm front rotor can clear the barrel and still foul the spokes at the caliper. Confirm your exact wheel design, inner barrel clearance, spoke clearance, and caliper position before ordering.
What the CCB upgrade actually changes
| STOPFLEX feature | Why it matters on the A45 S | What you notice |
|---|---|---|
| Carbon ceramic rotors, about half the weight of same-size steel | The A45 S is a short, punchy car that changes direction fast. Less mass spinning out at each corner is mass the suspension no longer has to fight. | Sharper turn-in and a front end that settles quicker over rough pavement. |
| 380mm front rotor with high thermal capacity | The front axle eats most of the heat under hard braking on a 400+ hp hatch. More rotor area means more room before the pedal goes soft. | A pedal that stays firm through repeated hard stops on a back road or a long descent. |
| 330mm rear rotor, matched to the front | A front-only swap looks half-finished and leaves the rear on iron. Matching the rear keeps the look and the heat handling balanced across both axles. | Even appearance behind all four wheels and rear braking that keeps up under load. |
| Low-dust behavior with STOPFLEX pads | AMG iron setups cake the wheels in dark dust. On a car people detail this often, that's a weekly chore. | Wheels that stay clean far longer between washes. |
| Rotors that don't rust after rain | Steel rotors flash orange after a wet night parked. On a build where wheel presentation matters, that surface film is a constant annoyance. | Clean rotor faces through the wheel spokes, wet weather or not. |
What gets better
- Lower unsprung and rotating mass front and rear
- More consistent pedal through repeated hard braking
- Much less brake dust with the matched STOPFLEX pads
- No orange rust film on the rotor faces after rain
- A serious carbon ceramic look that fills the 19-inch wheels
What to confirm first
- Exact W177 build and your specific wheel design
- Inner barrel clearance for the 380mm front rotor
- Spoke clearance at the caliper
- Pad compound matched to how you drive
- Proper bedding-in and centered, torqued install
If you're not sure your car matches the spec shown here, send us your wheel and build details and we'll confirm A45 S fitment before you order through our Mercedes-Benz CCB collection.
Build Gallery
FAQ
What brakes were fitted to this Mercedes-AMG A45 S W177?
This A45 S got STOPFLEX 380mm front carbon ceramic rotors, STOPFLEX 330mm rear carbon ceramic rotors, STOPFLEX high-performance ceramic pads, and matching bolts and install hardware, fitted behind 19-inch wheels.
Why upgrade the A45 S brakes when the factory setup is already strong?
The factory system is good for daily and light track use. The STOPFLEX CCB upgrade goes after lower unsprung weight, less brake dust, stronger heat tolerance, and rust-free rotors that hold up cosmetically over time.
Do these 380mm front and 330mm rear rotors fit every A45 S?
No. This car ran 19-inch wheels, but diameter alone does not confirm fit. Inner barrel clearance, spoke clearance, caliper position, and rotor sizing all need checking against your exact wheel before you order.
Is this CCB upgrade okay for daily driving?
Yes, with the right pad compound, a proper bedding-in, confirmed wheel clearance, and clean installation. Day to day the wins are cleaner wheels, lighter rotors, no rust film after rain, and a more planted brake feel.
What should I confirm before buying an A45 S carbon ceramic brake kit?
Confirm your exact W177 build, wheel size and design, spoke and inner barrel clearance, front and rear rotor sizes, pad compound, hardware, and how you actually drive the car. Always verify real clearance before purchase.
