2020-2024 BMW 2 Series (F44) CCB Big Brake Kit | Alcon RC6 6-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
We Ship Worldwide
2020-2024 BMW 2 Series (F44) CCB Big Brake Kit — Genuine Alcon RC6 6-Piston Caliper Front + Genuine Alcon RC4 4-Piston Caliper Rear Setup
The 2020-2024 BMW 2 Series F44 owner usually shops carbon ceramic brakes for repeated high-speed stops, heavy brake dust on open wheels, and the heat limits of factory iron hardware on a compact turbo chassis. This StopFlex kit uses 380mm carbon-ceramic rotors at both axles with a Genuine Alcon RC6 6-Piston Caliper in front and Genuine Alcon RC4 4-Piston Caliper in the rear, giving the car more thermal capacity and a lower-dust friction package than the factory setup. Every bracket, rotor-hat offset, and caliper position is matched to the confirmed F44 trim and wheel package, because a 228i Gran Coupe and an M235i xDrive Gran Coupe cannot be assumed to share the same brake clearance or mounting geometry.
- 380mm front and rear rotors require 19 inch or larger wheels on the F44; barrel and spoke clearance must still be checked before production.
- The front axle uses the exact Genuine Alcon RC6 6-Piston Caliper specified for this kit, paired with a 380mm carbon-ceramic rotor for heat capacity beyond the stock F44 iron package.
- F44 variants such as 228i, 228i xDrive, and M235i xDrive are confirmed by exact trim before StopFlex builds the brackets, rotor hats, and caliper mounting package.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW 2 Series (F44) |
| Model years | 2020-2024 |
| Front setup | Genuine Alcon RC6 6-Piston Caliper / 380mm |
| Rear setup | Genuine Alcon RC4 4-Piston Caliper / 380mm |
| 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 Alcon RC6 6-Piston Caliper, giving the 380mm rotor a wide, stable clamping platform and firmer pedal response under repeated braking than a smaller factory sliding-caliper layout. Alcon is a known performance brake manufacturer, and this genuine caliper selection gives the kit a credible motorsport-derived foundation without inventing a generic private-label caliper. The caliper package is mounted with StopFlex brackets and hat offsets engineered for the buyer’s confirmed F44 trim.
Rear Caliper (Balance)
The rear axle uses the Genuine Alcon RC4 4-Piston Caliper on a 380mm carbon-ceramic rotor so rear brake torque, pad area, and thermal behavior are matched to the front upgrade. For F44 cars equipped with the factory electronic parking brake, rear packaging is handled as part of the trim-specific engineering review.
Front & rear, engineered together: The RC6 front and RC4 rear package is engineered as a complete front/rear system so brake bias, rotor diameter, pad compound, and hydraulic behavior are considered together. That matters on the F44 because adding only a large front brake can shift balance forward and make the rear axle contribute less during repeated hard stops.
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 Alcon RC6 6-Piston Caliper |
| Front CCB rotors | 380mm |
| Rear calipers | Genuine Alcon RC4 4-Piston Caliper |
| Rear CCB rotors | 380mm |
| 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. |
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 380mm kit fit my exact BMW 2 Series F44 trim?
StopFlex does not assume platform-wide fitment for the F44. Before production, your exact year, trim, brake package, hub details, and wheel specifications are confirmed so the brackets, rotor-hat offsets, and caliper mounting suit that specific car.
What wheel size is required for the 380mm rotors?
The 380mm front and rear rotors require 19 inch or larger wheels. Wheel diameter alone is not enough; StopFlex also checks spoke profile, barrel shape, offset, and caliper clearance for the Genuine Alcon RC6 front caliper.
Will the electronic parking brake still work?
The BMW F44 uses an electronic parking brake at the rear, so EPB compatibility is reviewed during the rear-caliper engineering process. The order must be matched to the car’s exact rear brake and EPB configuration before the kit is built.
Why choose this kit instead of replacing the factory iron brakes?
The carbon-ceramic rotors reduce brake dust and add heat capacity for repeated hard stops, while the Genuine Alcon RC6 front and RC4 rear calipers give the F44 a matched fixed-caliper setup instead of simply refreshing the stock iron brake hardware.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
We’re here to help! Whether you need expert advice on brake setups, have questions about your order, or just want to share feedback, our team is ready to assist you. Reach out via your preferred channel below, or use the inquiry form.
Get in Touch
Business Hours
Monday – Saturday, 9:30 AM – 6:30 PM (GMT +8)
Current Time:
Follow Us
- Choosing a selection results in a full page refresh.