M5 F90 Build & Parts List
| Specification | STOPFLEX Front CCB Upgrade |
|---|---|
| Vehicle | BMW M5 (F90) |
| Front setup | Factory 6-piston M caliper retained, paired with a STOPFLEX carbon ceramic front rotor |
| Rear setup | Factory rear brakes retained |
| Axle scope | Front rotor-only upgrade |
| Front-axle weight saved | About 14 kg |
| Pad pairing | STOPFLEX low-dust matched pad compound |
| Rotor construction | STOPFLEX long-fiber carbon ceramic with high-temperature ceramic coating |
Before you order
This is a front rotor-only path for M5 F90 cars running the factory 6-piston M front calipers with the standard iron front brakes. If your car has a different front brake spec or aftermarket wheels, confirm caliper match and rotor clearance with STOPFLEX first.
What the Front CCB Upgrade Actually Does
| STOPFLEX feature | Why it matters on the M5 F90 | What you notice |
|---|---|---|
| Carbon ceramic rotor, about half the weight of a same-size steel rotor | The M5 F90 is a heavy sedan, and the stock front irons put real mass in a rotating, unsprung spot. That's the worst place to carry weight. | Roughly 14 kg gone from the front axle. The nose feels lighter and the car turns in with less reluctance. |
| Heat-stable friction, tested to hold around 0.3μ at 900°C | This car builds speed fast, so it loads the front brakes hard on back-to-back stops from triple digits. | More consistent pedal through repeated hard slowdowns instead of a soft, fading feel. |
| Low-dust STOPFLEX pad pairing | The stock front setup is notorious for coating the wheels in dark dust within days. | Far less dust on the front wheels, so they stay clean with way less scrubbing. |
| Rotors that don't rust after rain | An M5 F90 that lives outside as a daily would normally show surface rust on iron rotors between drives. | The brake package keeps its clean look whether the car sits a day or a week. |
| Long street life, around 250,000–300,000 km off track | Carbon ceramic reads expensive until you factor in how long it lasts in street use. | You're not chewing through rotors, which makes the upgrade rational over the life of the car. |
What gets better
- About 14 kg less rotating unsprung mass at the front axle
- Sharper, lighter front-end feel in quick direction changes
- Steadier pedal under repeated high-speed braking
- Dramatically less brake dust with STOPFLEX pads
- No rotor rust after rain, even on a daily driver
- Normal first-stop bite even down around -20°C
What to confirm first
- That your car runs the factory 6-piston M front calipers covered here
- Your current wheel setup, for rotor clearance
- That you want a front-axle upgrade with the factory rear brakes kept
- VIN on hand so fitment can be matched to your exact car
If you're not sure your car matches the spec shown here, send us your VIN and wheel details and we'll confirm BMW M5 F90 fitment before you order through our BMW CCB collection.
Build Gallery
M5 F90 Carbon Ceramic FAQ
Why upgrade only the front rotors on a BMW M5 F90?
The front axle does most of the braking work and throws most of the dust onto your wheels. On the M5 F90, a front carbon ceramic rotor upgrade gives you the biggest change in front-end feel, heat control, and wheel cleanliness without touching the whole system.
Does this STOPFLEX setup require modifying the factory calipers?
No. It's a direct-fit front rotor upgrade built to run with the factory BMW M 6-piston front calipers on the applicable M5 F90 setup, so there's no caliper machining and no extra bracketry.
How much weight does the front carbon ceramic upgrade save?
On this M5 F90 front-axle application, the setup removes about 14 kg across the front axle. Cutting rotating unsprung mass makes the nose feel lighter and the car more alert in quick transitions.
What happens to brake dust after the upgrade?
Dust is the number-one reason most owners do this. Paired with STOPFLEX pads, the carbon ceramic setup throws far less dust than the dust-heavy stock front brakes, so the wheels stay clean with a lot less scrubbing.
Is this a track upgrade or a street upgrade?
It's street-focused. The real wins are lower dust, less front rotor weight, stable braking under repeated hard stops, and a cleaner premium look on a daily-driven M5 F90.
Will STOPFLEX carbon ceramic rotors rust on a daily-driven M5 F90?
No. STOPFLEX carbon ceramic rotors don't rust after rain, so the brake package keeps its clean look between drives even when the M5 F90 sits outside as a daily.
