2014-2020 BMW 4 Series / M4 (F32/F33/F36/F82/F83) CCB Big Brake Kit | Brembo GT500 6-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
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2014-2020 BMW 4 Series / M4 (F32/F33/F36/F82/F83) CCB Big Brake Kit — Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper Front + Genuine Brembo GT4 Rear Setup
F32/F33/F36 4 Series and F82/F83 M4 owners usually shop this kit after fighting heat fade, iron-rotor dust on open wheels, or the replacement cost of factory carbon-ceramic hardware. StopFlex builds this kit around a 380 mm front carbon-ceramic rotor with a Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper, plus 355 mm rear carbon-ceramic rotors with matched Brembo 4-piston rear options. Each order is engineered for the confirmed model and trim so the rotor hats, brackets, caliper position, and wheel-clearance checks match the actual car, not just the chassis code.
- 380 mm is the largest rotor in this kit, so 19-inch wheels are the minimum; spoke shape and wheel offset still must be checked against the Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper.
- Rear choices are V4 with a Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper, GT4 with a Genuine Brembo GT | M4 4-Piston Caliper, or GTS4 with a Genuine Brembo GT | S4 4-Piston Caliper; all use a 355 mm rear rotor.
- F32/F33/F36 standard 4 Series and F82/F83 M4 variants are validated separately because M and non-M cars can differ in front upright geometry, hub position, and wheel ET clearance.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW 4 Series / M4 (F32/F33/F36/F82/F83) |
| Model years | 2014-2020 |
| Front setup | Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper / 380mm |
| Rear setup | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options / 355mm |
| Page type | Complete CCB kit upgrade |
| Minimum wheel size | 19" (for the 380 mm front rotor) |
Every StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.
This setup uses a 380 mm front rotor, so the minimum wheel size is 19". Wheels under 19" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
| Wheel Size (Standard) | Disc Range |
|---|---|
| 15" | 260 mm – 285 mm |
| 16" | 285 mm – 300 mm |
| 17" | 300 mm – 330 mm |
| 18" | 330 mm – 355 mm |
| 19" | 355 mm – 380 mm |
| 20" | 380 mm – 400 mm |
| 21" | 400 mm – 420 mm |
| 22" | 420 mm – 440 mm |
Caliper Overview — Front & Rear Balance
Front Caliper (Primary Upgrade)
The front axle uses the Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper, a genuine OEM-derived Brembo performance caliper selected for high thermal load and consistent pad pressure across the front rotor face. Its 6-piston layout supports strong clamping force and a firm, controllable pedal when paired with the 380 mm StopFlex carbon-ceramic rotor. The caliper is not renamed or substituted; bracket geometry and rotor-hat offset are engineered around this exact front caliper and the customer’s confirmed BMW trim.
Rear Caliper (Balance)
The rear axle is matched with Brembo V4 / GT4 / GTS4 4-Piston Caliper Options on 355 mm carbon-ceramic rotors to support rear stability and keep the front upgrade from overpowering the chassis. Rear option mapping is V4 = Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper, GT4 = Genuine Brembo GT | M4 4-Piston Caliper, and GTS4 = Genuine Brembo GT | S4 4-Piston Caliper.
Front & rear, engineered together: The 380 mm front and 355 mm rear package is engineered as a system so hydraulic balance, rotor leverage, and pad behavior are considered together. That matters on the F32/F33/F36/F82/F83 family because a front-only big-brake conversion can change pedal feel and ABS behavior if the rear axle is not matched to the car’s weight distribution and use case.
Make It Yours — Color & Logo Customization
Every StopFlex kit-upgrade order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the brake package matches your exact build instead of a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why StopFlex CCB
Lower Unsprung Mass
StopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.
High-Temperature Stability
The carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.
Rust-Free Rotor Surface
Carbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.
Long Street-Service Potential
In normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.
Low Visible Dust
When paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.
Premium Ceramic-Glaze Appearance
StopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.
Street-Usable Cold Bite
Street Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.
Continuous Fiber Reinforcement
Long-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak into pads, fluid, seals, calipers, wheels, and nearby components. For long track sessions, mountain descents, or sustained aggressive driving, brake cooling and high-temperature fluid are still recommended.
Street / Track-Day / Motorsport Rotor Options
Street Spec
Ceramic coating, cross-drilled face, and large cooling channels.
Best for daily driving and premium street builds that need clean cold bite, low dust, corrosion-free appearance, and long service life.
Track-Day Spec
Ceramic coating, blank face, and honeycomb cooling channels.
Best for fast-road and track-day use where repeated braking stability matters more than maximum visual drilling style.
Motorsport Spec
Uncoated blank face with honeycomb cooling channels.
Best for race-focused builds that run competition pads, high-temperature fluid, cooling strategy, and a proper warm-up window. Not the default street choice.
Package Scope
| Item | Details |
|---|---|
| Front calipers | Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper |
| Front CCB rotors | 380mm |
| Rear calipers | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options |
| Rear CCB rotors | 355mm |
| CCB brake pads | Matched for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| Color customization | Custom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order. |
| Order scope | Default listing is full-car set when front and rear are specified. Front-only or rear-only orders can be arranged after confirmation. |
| Rear caliper option mapping | V4 = Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper — 355 mm rotor GT4 = Genuine Brembo GT | M4 4-Piston Caliper — 355 mm rotor GTS4 = Genuine Brembo GT | S4 4-Piston Caliper — 355 mm rotor |
FAQ
Will this kit fit my exact F32, F33, F36, F82, or F83 trim?
Fitment is confirmed per vehicle before production. StopFlex does not assume that a standard 4 Series and an M4 share the same brake mounting geometry; brackets, rotor-hat offsets, and caliper placement are specified for your exact model, trim, hub geometry, and wheel package.
What wheels do I need for the 380 mm front rotor and GT500 6-piston caliper?
The 380 mm front rotor requires at least a 19-inch wheel. Diameter alone is not enough; the Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper also requires spoke and barrel clearance, so wheel width, offset, and spoke profile must be checked before ordering.
Will the parking brake still work?
Yes, the kit is configured around the factory mechanical parking-brake layout used on these F32/F33/F36/F82/F83 cars. These models do not use a factory EPB rear caliper, so the rear package is engineered around hydraulic braking and the retained drum-in-hat parking-brake function.
Why switch from factory iron or OEM carbon-ceramic brakes?
For iron-brake cars, the carbon-ceramic rotors reduce brake dust and unsprung mass while increasing heat capacity for repeated high-speed stops. For factory CCB cars, this kit gives a bespoke replacement path with 380 mm front and 355 mm rear carbon-ceramic hardware instead of relying on dealer-only rotor replacement.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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