2014-2024 MINI Cooper (F56 / F55 / F57) CCB Big Brake Kit | Brembo GT6 6-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
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2014-2024 MINI Cooper / Cooper S / JCW / GP (F56 / F55 / F57) CCB Big Brake Kit — Genuine Brembo GT6 Front + Genuine Brembo GT4 Rear Setup
F56/F55/F57 MINI owners usually look at this kit after repeated heat fade, pad deposit vibration, iron-rotor dust, or wheel-clearance questions around a serious big-brake conversion. StopFlex builds this MINI kit around Brembo V6 / GT6 / GTS6 6-Piston Caliper Options with 380 / 355 mm front carbon-ceramic rotors and Brembo V4 / GT4 / GTS4 4-Piston rear options on 355 mm rear rotors. The payoff is higher thermal capacity than the factory iron package, lower brake dust, reduced rotating mass versus comparable iron big rotors, and fitment engineered to the buyer’s exact Cooper, Cooper S, JCW, or GP configuration.
- Front rotor sizing is 380 / 355 mm with Brembo V6 / GT6 / GTS6 6-Piston Caliper Options; the 380 mm setup requires 19-inch or larger wheels and still needs spoke-clearance confirmation.
- Rear sizing is 355 mm with Brembo V4 / GT4 / GTS4 4-Piston Caliper Options, so the rear package is matched to the front upgrade instead of leaving the MINI on an unbalanced front-only conversion.
- Each F56/F55/F57 kit uses trim-specific brackets, rotor-hat offsets, caliper mounting, pads, hardware, and lines; Cooper, Cooper S, JCW, and GP fitment is confirmed before build rather than assumed from the shared chassis code.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | MINI Cooper / Cooper S / JCW / GP (F56 / F55 / F57) |
| Model years | 2014-2024 |
| Front setup | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options / 380/355mm |
| 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 uses Brembo V6 / GT6 / GTS6 6-Piston Caliper Options, giving the MINI a stiffer multi-piston front caliper layout for more even pad loading, stronger clamping control, and a firmer pedal response under repeated high-temperature stops. The buyer chooses among V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper with 380 / 355 mm rotor, GT6 = Genuine Brembo GT | M6 6-Piston Caliper with 380 / 355 mm rotor, or GTS6 = Genuine Brembo GT | S6 6-Piston Caliper with 380 / 355 mm rotor. All three are genuine Brembo-based caliper paths, selected for a bespoke MINI carbon-ceramic package rather than a cosmetic caliper swap.
Rear Caliper (Balance)
The rear package uses Brembo V4 / GT4 / GTS4 4-Piston Caliper Options on a 355 mm carbon-ceramic rotor to support rear axle braking contribution and stability under hard deceleration. Rear fitment and parking-brake handling are confirmed against the exact F55/F56/F57 trim because this generation includes manual-lever cars and some later electronic-parking-brake configurations.
Front & rear, engineered together: StopFlex engineers the front and rear rotor diameters, caliper mounting, pad choice, and hydraulic behavior as one brake system so the MINI does not end up with excessive front bias from a front-only big-brake conversion. Matching the 6-piston front package with a 4-piston rear package helps preserve braking stability, ABS behavior, and pedal consistency when the car is driven hard.
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 | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options |
| Front CCB rotors | 380/355mm |
| 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. |
| Front caliper option mapping | V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 / 355 mm rotor GT6 = Genuine Brembo GT | M6 6-Piston Caliper — 380 / 355 mm rotor GTS6 = Genuine Brembo GT | S6 6-Piston Caliper — 380 / 355 mm rotor |
| 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 |
EPB & Rear Caliper Options
This vehicle leaves the factory with an electronic parking brake (EPB) built into the rear brake, so the rear of the kit is built to keep that EPB working. There are two rear paths. The first is a dual-caliper rear: a main performance caliper handles braking while a dedicated EPB actuator caliper is retained alongside it, so the electronic parking brake, auto-hold, and hill-start assist all keep working; on this path the rear performance caliper can be the TTSPORT EP4 / EP4S 4-piston caliper. The second is an EPB-integrated caliper, a single rear caliper with the electromechanical parking-brake motor built in for a cleaner install with fewer parts behind the wheel; on this path the rear is the TTSPORT EP4 / EP4S 4-piston caliper with integrated EPB. Which path fits best depends on your exact trim and EPB configuration, your budget, your appearance preference, and your wheel size and spoke clearance. Confirm your car's rear-brake configuration with StopFlex before ordering so the correct EPB-compatible rear option is built for your kit.
| Rear option | What it is | Rear caliper | Best when |
|---|---|---|---|
| Dual caliper (EPB retained) | Performance caliper plus a dedicated EPB actuator caliper, both fitted on the rear, so the factory electronic parking brake keeps working. | TTSPORT EP4 / EP4S 4-Piston Caliper | You want guaranteed factory EPB, auto-hold, and hill-start behavior preserved. |
| EPB-integrated caliper | A single rear caliper with the electromechanical parking-brake motor built in, for a cleaner install with fewer parts behind the wheel. | TTSPORT EP4 / EP4S 4-Piston Caliper with integrated EPB | You want a cleaner single-caliper rear with full EPB function. |
FAQ
Will this fit my exact MINI Cooper, Cooper S, JCW, or GP?
The kit is not sold as a vague F56/F55/F57 platform-wide bolt-on. StopFlex confirms the exact model, trim, factory brake package, hub/knuckle configuration, and wheel data, then builds the brackets, rotor-hat offsets, and caliper mounting for that specific MINI.
What wheel size do I need for the 380 mm front rotor?
The 380 mm front carbon-ceramic rotor requires at least a 19-inch wheel, and barrel diameter alone is not enough. Spoke clearance must also be checked against the Brembo V6 / GT6 / GTS6 6-piston caliper profile before the kit is finalized.
Will the parking brake still work?
Parking-brake retention depends on the exact rear configuration. Many F56/F55/F57 cars use a manual cable handbrake, while some later automatic cars may have an electronic parking-brake button; StopFlex confirms the VIN and rear-brake layout before specifying the rear caliper and hardware.
Why choose carbon-ceramic instead of a larger iron big-brake kit?
On a compact MINI chassis, carbon-ceramic rotors reduce brake dust and rotating mass compared with similarly sized iron rotors while adding heat capacity for repeated hard stops. The 380 / 355 mm front and 355 mm rear sizing also gives the car the visual and thermal scale of a true big-brake conversion without treating every F56/F55/F57 trim as mechanically identical.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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