2020-2026+ Mercedes-AMG GLA45S / CLA45 / GLA35 (H247) 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 2020-2026+ Mercedes-AMG GLA45S / CLA45 / GLA35 (H247). Factory rotor specifications and the smallest wheel that clears each trim:
| Trim | Front Rotor (Factory) | Rear Rotor (Factory) | Min. Wheel Size |
|---|---|---|---|
| GLA45S/GLA45 | 360mm | 19" | |
| GLA35 | 350mm | 18" | |
| GLA45S/CLA45/GLA35 | 330mm | 17" |
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
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.
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.
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
Will this fit my GLA45S, CLA45, or GLA35?
Yes, within the exact trims and rotor sizes on this page. The GLA45S and CLA45 use a 360mm front disc; the GLA35 uses a 350mm front disc. All three share a 330mm rear. This is a direct replacement that reuses your factory AMG calipers, which meet the 4-piston-or-more front requirement on these H247 cars. Confirm your VIN before ordering, since front rotor diameter differs between the 45-series and the GLA35.
How do these carbon ceramic discs behave in winter and on cold first stops?
A cold carbon-ceramic disc bites a little less than cold iron on the very first stops. That's normal physics, not a defect. We tuned both the low-metallic resin-composite pad and the disc's ceramic coating for cold starts, so winter cold-car feel on these H247 AMGs now comes very close to summer feel. On the coldest mornings, leave a little extra following distance for the first one or two stops until the front discs come up to temperature, then bite is consistent.
Do I keep my factory calipers, and does this work with the electronic parking brake?
You keep the factory AMG calipers front and rear. The kit supplies carbon-ceramic rotors, pads, hats, and floating hardware to bolt into your existing calipers. The rear brake uses the electronic parking brake actuator built into the factory rear caliper, which you retain, so EPB function is unaffected. No caliper swap, no brackets to fabricate.
Will these clear my wheels, and how much weight do they save?
Since you retain the factory 360mm/350mm front and 330mm rear geometry, any wheel that cleared your stock AMG brakes clears these. The carbon-ceramic rotors cut a significant chunk of rotating and unsprung mass at each corner versus the iron originals, which the front axle on these turbo four-cylinder AMGs feels most in turn-in and repeated hard stops on track.
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.