2014-2020 BMW 4 Series / M4 (F32/F33/F36/F82/F83) 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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2014-2020 BMW 4 Series / M4 (F32/F33/F36/F82/F83) CCB Big Brake Kit — Genuine Brembo GT6 Front + Genuine Brembo GT4 Rear Setup
F32/F33/F36 4 Series and F82/F83 M4 owners usually look at carbon-ceramic brakes when repeated high-speed stops, track heat, iron dust or OEM carbon-ceramic replacement cost become the limiting factor. This StopFlex kit pairs a 380 mm front carbon-ceramic rotor with Brembo V6 / GT6 / GTS6 6-piston caliper options and a 355 mm rear carbon-ceramic rotor with Brembo V4 / GT4 / GTS4 4-piston options. Each kit is built to the buyer’s exact trim, because standard 4 Series and M4 variants do not share every upright, hub-offset and wheel-clearance requirement.
- 380 mm front carbon-ceramic rotors require 19 inch or larger wheels on the F32/F33/F36/F82/F83 chassis; spoke clearance is confirmed before the kit is built.
- Front choices are V6, GT6 or GTS6 6-piston Brembo calipers, each matched to the same 380 mm carbon-ceramic front rotor size.
- Rear choices are V4, GT4 or GTS4 4-piston Brembo calipers with 355 mm carbon-ceramic rotors, so rear thermal capacity and bias are addressed instead of leaving the rear system as an afterthought.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW 4 Series / M4 (F32/F33/F36/F82/F83) |
| Model years | 2014-2020 |
| Front setup | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options / 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 Brembo V6 / GT6 / GTS6 6-Piston Caliper Options, giving the 380 mm carbon-ceramic rotor a rigid multi-piston clamp path for stable pedal response under repeated heat cycles. The buyer chooses among V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor, GT6 = Genuine Brembo GT | M6 6-Piston Caliper — 380 mm rotor, or GTS6 = Genuine Brembo GT | S6 6-Piston Caliper — 380 mm rotor. These are genuine Brembo caliper families, not unbranded castings, and the mounting hardware is engineered around the confirmed BMW trim.
Rear Caliper (Balance)
The rear axle uses Brembo V4 / GT4 / GTS4 4-Piston Caliper Options on a 355 mm carbon-ceramic rotor to support braking stability and front-to-rear torque balance. Rear choices are V4 = Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper, GT4 = Genuine Brembo GT | M4 4-Piston Caliper, or GTS4 = Genuine Brembo GT | S4 4-Piston Caliper, each paired with the 355 mm rotor.
Front & rear, engineered together: The 380 mm front and 355 mm rear package is engineered as one system so piston area, rotor diameter, pad selection and hat offsets are matched to the specific car. That matters on this chassis family because an F82/F83 M4 and a non-M F32/F33/F36 can require different bracket geometry and wheel-clearance validation even when the body generation looks similar.
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 | 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. |
| Front caliper option mapping | V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor GT6 = Genuine Brembo GT | M6 6-Piston Caliper — 380 mm rotor GTS6 = Genuine Brembo GT | S6 6-Piston Caliper — 380 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 |
FAQ
Will this kit fit my exact 4 Series or M4 trim?
Fitment is not treated as a platform-wide F32/F33/F36/F82/F83 assumption. StopFlex confirms the exact year, trim, front knuckle/upright, hub geometry, existing brake package and wheel data before building the brackets, rotor hats and caliper mounts.
What wheel size do I need for the 380 mm front rotor?
The 380 mm front carbon-ceramic rotor requires 19 inch or larger wheels. Barrel shape, spoke profile and offset still matter, so StopFlex checks wheel clearance before the kit is released for production.
Will the parking brake still work?
This chassis family uses a manual cable parking brake, not an EPB motor on the rear caliper. Rear kit planning must preserve the mechanical parking-brake function with the correct rear configuration for the confirmed model.
Why switch from BMW iron brakes or OEM carbon-ceramic parts?
The StopFlex CCB setup targets lower brake dust, reduced rotating mass and stronger heat control than an iron setup, while giving M4 owners with worn or cracked OEM carbon-ceramic parts a complete rotor, caliper, pad, hat, hardware and line package built around the chosen Brembo calipers.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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