2012-2018 BMW 3 Series / M3 (F30/F31/F80) 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.
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2012-2018 BMW 3 Series / M3 (F30/F31/F80) CCB Big Brake Kit — Genuine Alcon RC6 6-Piston Caliper Front + Genuine Alcon RC4 4-Piston Caliper Rear Setup
F30/F31 3 Series and F80 M3 owners usually reach this page after repeated iron-rotor heat issues, heavy brake dust on open wheels, or the cost of replacing worn factory performance brakes. This StopFlex kit uses 380mm carbon-ceramic rotors at all four corners with a Genuine Alcon RC6 6-Piston Caliper in front and a Genuine Alcon RC4 4-Piston Caliper in the rear for higher thermal capacity, lower rotating mass, and cleaner street use than conventional iron hardware. Each kit is engineered to the confirmed trim, because a standard F30/F31 and an F80 M3 can require different brackets, rotor-hat offsets, and wheel-clearance checks.
- 380mm front and rear carbon-ceramic rotors require 19-inch or larger wheels; barrel and spoke clearance are checked against the Genuine Alcon RC6 front caliper before build.
- The F30/F31 and F80 family includes standard 3 Series and M3 geometry, so StopFlex does not assume one platform-wide bracket or rotor-hat offset.
- This kit targets the common F30/F31/F80 upgrade goals: more heat capacity for repeated high-speed stops, lower brake dust than iron setups, and reduced rotating mass at each corner.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW 3 Series / M3 (F30/F31/F80) |
| Model years | 2012-2018 |
| 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, which spreads clamping load through six pistons to support a firmer, more controlled pedal under repeated braking. Alcon is a known motorsport and performance-brake supplier, and the RC6 is a purpose-built fixed caliper rather than a cosmetic cover or rebranded stock casting. StopFlex pairs it with a 380mm carbon-ceramic front rotor, trim-specific mounting hardware, pads, hats, lines, and verified wheel clearance.
Rear Caliper (Balance)
The rear axle uses the Genuine Alcon RC4 4-Piston Caliper with a matching 380mm carbon-ceramic rotor so rear torque capacity is engineered with the front axle instead of left as a stock-caliper compromise. The F30/F31/F80 listing uses a mechanical cable/drum-in-hat parking brake layout, not a factory EPB caliper that must be electronically retained.
Front & rear, engineered together: The RC6 front and RC4 rear package is specified as a complete system so piston area, rotor diameter, pad selection, and rear contribution are matched before the kit is built. That matters on this chassis family because an F30/F31 street car and an F80 M3 can differ in front upright, hub geometry, and wheel offset, making front-only assumptions risky for bias and fitment.
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. |
FAQ
Will this kit fit my exact F30, F31, or F80 trim?
Fitment is not treated as a generic F30/F80 bolt-on. StopFlex confirms your exact model, trim, production details, hub and knuckle package, wheel size, offset, and spoke profile before machining brackets and rotor hats for the 380mm Alcon RC6/RC4 system.
What wheel size do I need for the 380mm kit?
The 380mm rotors require 19-inch or larger wheels. Wheel diameter alone is not enough; spoke clearance to the Genuine Alcon RC6 6-Piston Caliper is also verified before the kit is approved for production.
Will the parking brake or auto-hold function change?
This F30/F31/F80 application does not use an electronic parking brake caliper from the factory. The kit is engineered around the chassis parking-brake layout, including the rear rotor hat requirements for the mechanical drum-in-hat parking brake.
Why choose carbon-ceramic over replacement iron rotors on this BMW?
Carbon-ceramic rotors reduce rotating and unsprung mass, create far less visible dust than iron setups, and tolerate repeated heat cycles better in aggressive street and track use. For F80 M3 owners comparing dealer-priced carbon-ceramic service parts, StopFlex also provides a complete caliper, rotor, pad, hat, hardware, and line package built to the confirmed car.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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