2020-2024 BMW 2 Series (F44) Carbon Ceramic Big Brake Kit — Brembo GT6
Official Warranty: We offer a 1-year free replacement for quality defects or coating issues under normal (non-track) use. Please note that provided specs apply strictly to brake hats and brackets; wheel fitment data is for general reference only. Wheel clearance issues are excluded from warranty coverage and data accuracy claims. If additional clearance is needed, wheel spacers must be added at the customer's discretion.
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Will This Fit My Car?
Full Upgrade CCB Big Brake Kits (With Calipers) for the 2020-2024 BMW 2 Series (F44). This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2020-2024 | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options / 380mm | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options / 355mm | 19" |
Every StopFlex kit is bespoke-engineered for your exact model and trim — brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, never assumed from the platform. Trims that share a chassis name can differ mechanically: a pure performance variant often carries different knuckles, hub geometry, and wheel ET clearance than the standard models, so parts that bolt onto one are not the parts that fit the other. Calipers, pads, rotor hats, floating hardware, and brake lines ship as one matched system built to your confirmed trim. Modified knuckles, uprights, or non-factory suspension mounting points must be reviewed before ordering.
The 380 mm rotor sets the minimum wheel size at 19" — smaller wheels will not clear the caliper and rotor. Spoke profile and offset also affect clearance; 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 |
What's in the Box
| Item | Details |
|---|---|
| Product type | Full Upgrade CCB Big Brake Kits (With Calipers) |
| Front calipers |
Option 1: Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor OE / Part No.: L 172-2521 · R 172-2522 Option 2: Brembo GT | M6 6-Piston Caliper — 380 mm rotor Option 3: Brembo GT | S6 6-Piston Caliper — 380 mm rotor |
| Rear calipers |
Option 1: Brembo OEM Cadillac CTS-V 4-Piston Caliper — 355 mm rotor OE / Part No.: L 172-2523 · R 172-2524 Option 2: Brembo GT | M4 4-Piston Caliper — 355 mm rotor Option 3: Brembo GT | S4 4-Piston Caliper — 355 mm rotor |
| Rotor construction | Short-Fiber Street Spec (lower price, street-only) or Long-Fiber Street / Track-Day / Motorsport Spec — chosen at order confirmation |
| CCB brake pads | Matched ceramic-compatible compound for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| 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. |
Make It Yours — Color & Logo Customization
Specify custom caliper colors, a custom caliper logo, and custom rotor hat colors on any kit order — the finished package matches your build instead of a standard catalog look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why Carbon Ceramic — and Why StopFlex
Bespoke Per-Vehicle Engineering
Every order is machined to the confirmed vehicle and trim. Brackets, hat offsets, and pad shapes are built for that exact car — never pulled from a one-size-fits-all catalog.
CCB-Specific Pad Compound
A low-metallic resin pad compound reinforced with steel, copper, and aramid fiber, made for ceramic discs: stable to about 750 °C, roughly 0.44 average friction, strong fade resistance, low rotor wear.
Lower Unsprung Mass
A like-size carbon-ceramic rotor can be materially lighter than an iron disc; the exact saving depends on rotor dimensions. Lower rotating, unsprung mass can reduce the load the suspension has to control.
High-Temperature Stability
The carbon-silicon-carbide friction material is selected for high-temperature stability and fade resistance. Overall pedal feel still depends on pad condition, fluid, caliper stiffness, cooling and operating temperature.
Rust-Free Rotor Surface
Ceramic discs cannot flash-rust. After rain, a wash, or weeks of parking, the rotor face behind your open-spoke wheels stays clean — no orange ring on a freshly detailed car.
Long Street-Service Life
In normal road use with matched pads and correct bedding, carbon-ceramic friction surfaces are designed for low wear. Actual service life depends on mileage, contamination, pad choice, heat cycles and driving use.
Low Visible Dust
Matched StopFlex pads are selected for low visible dust on the ceramic friction surface. Actual wheel dust still varies with pad choice, traffic, temperature, bedding and driving intensity.
Premium Ceramic-Glaze Finish
StopFlex's proprietary coating gives the disc a bright ceramic-glaze surface with subtle texture — the factory carbon-ceramic look, clearly visible through open wheel designs.
Short-Fiber or Long-Fiber — Your Call
Every StopFlex disc is true carbon-ceramic. Short-Fiber Street Spec uses a simpler chopped-fiber process for a lower price and street-only duty; the Long-Fiber line uses continuous carbon strands that carry load across the whole rotor for higher strength and thermal durability — the pick for track and race heat.
Winter & Cold-Weather Braking
Winter use is possible, but cold-start behavior should be treated honestly: ceramic friction can have less initial bite before temperature builds. StopFlex tunes the matched pad/coating combination for cold response; keep extra distance on the coldest first stops and select a Street Spec for severe climates.
Caliper Overview
Front Caliper
Brembo V6 / GT6 / GTS6 6-Piston Caliper Options pair with the supplied 380 mm front rotor. Select V6, GT6, or GTS6 during the confirmed trim-specific build.
Rear Caliper
Brembo V4 / GT4 / GTS4 4-Piston Caliper Options pair with the supplied 355 mm rear rotor. Rear mounting and parking-brake integration are confirmed for the exact vehicle before production.
Choose Your Rotor: Short-Fiber Street to Long-Fiber Motorsport
Left to right is ascending duty. Short-Fiber Street Spec keeps carbon-ceramic benefits at a lower price for street use only; the Long-Fiber Street, Track-Day, and Motorsport specs add continuous-fiber strength and thermal durability for everything from daily premium builds to race weekends.
Short-Fiber Street Spec
Chopped short-fiber carbon-ceramic body, ceramic coating, cross-drilled face.
Choose this for street-only use when purchase price matters most. It keeps the carbon-ceramic friction surface and coated finish, but it is not specified for track sessions.
Long-Fiber Street Spec
Continuous long-fiber body, ceramic coating, cross-drilled face, large cooling channels.
Choose this for daily and fast-road use when you want the long-fiber construction without moving to a track-focused face and cooling specification.
Long-Fiber Track-Day Spec
Continuous long-fiber body, ceramic coating, blank face, honeycomb cooling channels.
Choose this for repeated fast-road or track-day braking where thermal duty matters more than the drilled street appearance. High-temperature fluid and appropriate cooling still matter.
Long-Fiber Motorsport Spec
Continuous long-fiber body, uncoated blank face, honeycomb cooling channels.
Choose this for competition-focused use with the corresponding pad, fluid, cooling and warm-up strategy. It is not the default recommendation for a street-driven car.
Heat Management Note
High rotor temperature tolerance does not mean heat management disappears. Under repeated hard braking, heat migrates into the pads, brake fluid, seals, calipers, and wheels even when the ceramic disc itself is comfortable. Plan brake cooling and high-temperature fluid for extended track sessions, long mountain descents, or sustained aggressive driving.
Get Your Fitment Confirmed
Send the exact year, model, trim, current rotor sizes, caliper type, and wheel details before ordering. StopFlex confirms the supplied configuration before production and requests VIN/build data when needed.
FAQ
Does this full kit fit every 2020-2024 BMW 2 Series F44?
It is built only after the exact F44 model and trim are confirmed. This full upgrade uses a 380 mm front rotor with Brembo V6, GT6, or GTS6 6-piston caliper options, plus a 355 mm rear rotor with V4, GT4, or GTS4 4-piston options. Brackets, hat offsets, caliper mounting, and rear parking-brake integration are not assumed across F44 trims.
What wheels are required for the 380 mm front brake setup?
The 380 mm front configuration requires at least a 19-inch wheel. Diameter alone is not enough: spoke profile and wheel offset must physically clear the selected Brembo V6, GT6, or GTS6 caliper. Send the wheel details during fitment confirmation before ordering.
Which carbon-ceramic rotor specification should I choose?
Choose Short-Fiber Street Spec for lower-cost street-only use. Long-Fiber Street is the step up for more demanding road use; Long-Fiber Track-Day and Motorsport are for progressively higher heat and duty requirements. Select the rotor specification around how the F44 is actually used, not the caliper option.
How does the kit behave in winter or on cold first stops?
An untuned cold carbon-ceramic disc can have less initial bite than cold iron. This kit uses a matched pad compound and disc coating tuned to reduce that cold-start gap, but the coldest first stops still deserve extra margin. Do not expect identical warm-weather response immediately after a cold start.
More Contact Information
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