2012-2018 BMW 3 Series / M3 (F30/F31/F80) 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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2012-2018 BMW 3 Series / M3 (F30/F31/F80) CCB Big Brake Kit — Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper Front + Genuine Brembo GT4 Rear Setup
F30/F31 3 Series and F80 M3 owners usually shop this kit after finding the limits of heavy iron rotors: heat fade on repeated stops, brake dust on open wheels, or the cost of replacing worn performance brake hardware. This StopFlex kit pairs 380 mm front carbon-ceramic rotors with a Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper, then matches the rear with a 355 mm carbon-ceramic rotor and Brembo V4, GT4, or GTS4 4-piston option. Brackets, hat offsets, and caliper mounts are engineered for the buyer’s confirmed trim, because an F30 328i/335i and an F80 M3 do not share every brake-fitment dimension.
- 380 mm front carbon-ceramic rotors require 19 inch or larger wheels on this F30/F31/F80 application; spoke clearance still has to be verified before order release.
- Front axle uses the exact Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper with a StopFlex 380 mm carbon-ceramic rotor, hat, bracket, pads, lines, and hardware.
- Rear axle uses a 355 mm carbon-ceramic rotor with one of three 4-piston choices: V4 Genuine Brembo OEM Cadillac CTS-V, GT4 Genuine Brembo GT | M4, or GTS4 Genuine Brembo GT | S4.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW 3 Series / M3 (F30/F31/F80) |
| Model years | 2012-2018 |
| 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 upgrade is built around the Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper, giving the F30/F31/F80 a six-piston fixed-caliper layout for stronger pad control and a firmer pedal than a smaller sliding or lower-piston factory setup. Its value is that it is a genuine OEM-derived Brembo performance caliper, not an unbranded casting, and StopFlex adapts it with vehicle-specific mounting hardware and a 380 mm carbon-ceramic rotor. Final bracket geometry and rotor-hat offset are matched to the confirmed BMW trim rather than assumed from the F30/F31/F80 chassis code.
Rear Caliper (Balance)
The rear is matched with Brembo V4 / GT4 / GTS4 4-Piston Caliper Options on a 355 mm carbon-ceramic rotor: V4 uses the Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper, GT4 uses the Genuine Brembo GT | M4 4-Piston Caliper, and GTS4 uses the Genuine Brembo GT | S4 4-Piston Caliper. These rear options keep rear brake torque and pad control in proportion to the 380 mm six-piston front package; this chassis listing uses a manual/cable parking brake, not an EPB rear-caliper motor.
Front & rear, engineered together: The 380 mm front and 355 mm rear carbon-ceramic package is engineered as a system so piston area, rotor diameter, pad selection, hat offset, and line routing work together. That matters on F30/F31/F80 cars because a front-only big caliper can change pedal travel, ABS behavior, and rear stability if the rear axle is not matched to the front torque increase.
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 F30, F31, or F80 trim?
Fitment is not treated as universal across the chassis family. StopFlex confirms your exact model, trim, brake package, hub/upright details, and wheel data before machining brackets, rotor hats, and caliper mounts for your car.
What wheel size do I need for the 380 mm front rotor?
The 380 mm front rotor requires 19 inch or larger wheels. Barrel diameter is only one check; spoke shape, offset, and caliper face clearance also have to clear the Genuine Brembo OEM Ford Shelby GT500 Mustang 6-Piston Caliper.
Will the parking brake or EPB still work?
This F30/F31/F80 listing does not use a factory EPB rear caliper; these cars use a manual/cable parking brake. StopFlex reviews the rear configuration during order confirmation so the brake kit does not assume an electronic actuator that the car does not have.
Why choose carbon-ceramic instead of another iron big brake kit?
Carbon-ceramic rotors reduce brake dust, resist heat fade during repeated high-speed stops, and cut rotating and unsprung mass compared with similar-size iron rotors. On a 3 Series or M3 with 19 inch open wheels, the payoff is lower dust, less heat saturation, and a motorsport-style rotor appearance without relying on BMW dealer carbon-ceramic replacement pricing.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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