2019-2025 Mercedes-AMG GT63S / GT63 / GT53 / GT43 4-Door (X290) Carbon Ceramic Brake Rotors
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
We Ship Worldwide
Real Customer Builds & Reviews
Will This Fit My Car?
Direct Replacement CCB Discs (Retain Factory Calipers) for the 2019-2025 Mercedes-AMG GT63S / GT63 / GT53 / GT43 4-Door (X290). Factory rotor specifications and the smallest wheel that clears each trim:
| Trim | Front Rotor (Factory) | Rear Rotor (Factory) | Min. Wheel Size |
|---|---|---|---|
| GT63S/GT63 | 390mm, 402mm (CCB) | 21" | |
| GT53/GT43 | 360mm | 19" | |
| GT63S/GT63/GT53/GT43 | 360mm | 19" |
Keep Your Factory Calipers?
Keep them if the front calipers are fixed 4-piston or more — the rear axle qualifies regardless. Front 1- or 2-piston floating calipers rule out the disc-only route; choose the Full Upgrade kit instead. Every set is machined to the factory rotor specs listed above, and aftermarket calipers (Brembo, AP Racing, Alcon, Wilwood) only need the caliper model, pad shape, and rotor dimensions confirmed before we build.
Spoke profile and offset also affect clearance — confirm your exact wheels before ordering.
What's in the Box
| Item | Details |
|---|---|
| Product type | Direct Replacement CCB Discs (Retain Factory Calipers) |
| CCB rotors | Full-car set by default, built to the factory rotor specification |
| CCB brake pads | Matched ceramic-compatible compound for StopFlex carbon ceramic rotors |
| 7075 aluminum floating rotor hats | Vehicle-specific fitment; custom rotor hat colors available for every Direct Replacement order. |
| Stainless floating hardware | Full-car hardware set |
| Order scope | Default listing is full-car set. Front-only or rear-only orders can be arranged after confirmation. |
Why Carbon Ceramic — and Why StopFlex
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, one StopFlex CCB rotor set is engineered to outlast several sets of iron replacement rotors, recovering part of the up-front cost.
Low Visible Dust
Matched with StopFlex pads, the system sheds a fraction of the dust an iron rotor and pad combination throws. Wheels stay clean for weeks of driving instead of days.
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.
Continuous Fiber Construction
StopFlex discs are built with long continuous carbon fiber instead of chopped short fiber. Continuous strands carry load across the whole rotor body, raising strength and thermal durability under heat cycles.
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 carbon-ceramic rotor weighs roughly half of the equivalent iron disc. Less rotating, unsprung mass lets the suspension follow broken pavement more cleanly and makes steering response noticeably sharper.
High-Temperature Stability
The carbon-silicon-carbide friction matrix keeps working at temperatures that push iron rotors into heavy fade, so the tenth hard stop feels like the first — same pedal travel, same bite point.
Winter & Cold-Weather Braking
A cold, untuned carbon-ceramic disc needs more pedal than iron on the first winter stops — normal material physics. StopFlex engineered the pad formula and disc coating specifically for cold starts, closing that gap: cold-car winter feel is now very close to summer feel. Keep a little extra distance on the coldest mornings; for harsh winters, choose Street Spec.
Choose Your Rotor: Street, Track-Day, or Motorsport
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.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat still soaks 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.
Get Your Fitment Confirmed
Send the exact vehicle details, current rotor sizes, and caliper type before ordering. Every StopFlex order is confirmed against your VIN-level configuration before production.
FAQ
Does this work if my GT63S came with the 402mm carbon-ceramic front rotors?
Yes. This page covers both GT63S/GT63 front sizes — 390mm and 402mm CCB — plus the GT53/GT43 360mm front and the shared 360mm rear across all four trims. The kit reuses your factory X290 calipers, so you install the disc size that matches what your car left the factory with. Confirm your exact front rotor diameter and trim before ordering, because the hats and floating hardware are machined per size.
How do these behave in winter on the first cold stops?
Honest physics first: any cold carbon-ceramic disc bites a little less than cold iron until it comes up to temperature — that's the material, not a defect. StopFlex tunes for it two ways: the low-metallic resin-composite pad (steel, copper, and aramid fiber, ~0.44 average friction) and a ceramic disc coating optimized for cold starts. On the X290 the result is that cold-car feel now sits very close to warm summer feel. On the coldest mornings, leave a little extra following distance for the first one or two stops.
Can I keep my factory AMG calipers or do I need new ones?
You keep them. This is a direct replacement — carbon-ceramic rotors, pads, hats, and floating hardware that bolt to the existing X290 front and rear calipers. Direct replacement is valid because the AMG GT 4-Door front calipers are 6-piston fixed units, well above the 4-piston minimum this format requires. No caliper swap, no bracket relocation, no master-cylinder change.
Will these clear my factory wheels and work with the electronic parking brake?
The kit retains factory rotor diameters — up to 402mm front on GT63S/GT63, 360mm on GT53/GT43, 360mm rear on all trims — so if your current wheels clear the OE carbon-ceramic setup, they clear these. The X290 uses an EPB integrated into the rear caliper, and because you reuse that caliper, the parking-brake function is unchanged. No recalibration of the EPB is needed.
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.