2019-2025 Mercedes-AMG GT63S / GT63 / GT53 / GT43 4-Door (X290) Carbon Ceramic Brake Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2019-2025 Mercedes-AMG GT63S / GT63 / GT53 / GT43 4-Door (X290) Carbon Ceramic Brake Kit — OEM-Size Replacement
The X290 AMG GT 4-Door puts real load into the front brakes, especially the GT63S and GT63 cars running 390 mm iron or 402 mm AMG carbon-ceramic front rotors. This StopFlex OEM-size replacement kit keeps the factory rotor envelope for GT63S, GT63, GT53, and GT43 fitments while replacing the rotors, pads, hats, and floating hardware as a matched carbon-ceramic system. The payoff is lower brake dust on open AMG wheels, reduced rotating mass versus iron, and stable high-temperature behavior without changing the car’s caliper architecture.
- Front fitment is trim-specific: GT63S/GT63 applications use 390 mm or 402 mm carbon-ceramic front rotor references, while GT53/GT43 applications use the 360 mm front rotor reference listed for this page.
- Rear fitment is shared across GT63S, GT63, GT53, and GT43 X290 models on this page with a 360 mm rear rotor reference and matching pads, hats, and floating hardware.
- Designed as an OEM-size replacement for the 2019-2025 AMG GT 4-Door X290, so ordering depends on the original rotor diameter and trim rather than a generic AMG GT badge match.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Mercedes-AMG GT63S / GT63 / GT53 / GT43 4-Door (X290) |
| Model years | 2019-2025 |
| Front rotor reference | GT63S/GT63: 390mm, 402mm (CCB); GT53/GT43: 360mm |
| Rear rotor reference | GT63S/GT63/GT53/GT43: 360mm |
| Page type | OEM-size carbon ceramic replacement |
| Minimum wheel size | 20" (for the 390 mm rotor) |
For OEM replacement orders, StopFlex builds around the factory rotor specification shown for this vehicle. Front floating-caliper setups require manual review before production. If the car uses aftermarket calipers such as Brembo, AP Racing, Alcon, or Wilwood, the order can still be built, but the exact caliper model, pad shape, and rotor dimensions must be confirmed before production.
This setup uses a 390 mm rotor, so the minimum wheel size is 20". Wheels under 20" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
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.
Custom Rotor Hat Color
Every StopFlex OEM replacement order can be built with a custom rotor hat color, giving the carbon ceramic rotor package a cleaner match with the wheel, body color, and overall build style.
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 |
|---|---|
| CCB rotors | Full-car set by default |
| CCB brake pads | Matched for StopFlex carbon ceramic rotors |
| 7075 aluminum floating rotor hats | Vehicle-specific fitment |
| Stainless floating hardware | Full-car hardware set |
| Rotor hat color | Custom rotor hat colors are available for every OEM replacement order. |
| Order scope | Default listing is full-car set. Front-only or rear-only orders can be arranged after confirmation. |
FAQ
Will this kit fit every 2019-2025 AMG GT 4-Door X290?
No. This page is limited to GT63S, GT63, GT53, and GT43 X290 models with the exact rotor sizes listed: GT63S/GT63 front 390 mm or 402 mm CCB reference, GT53/GT43 front 360 mm reference, and 360 mm rear reference. Confirm your current front rotor diameter before ordering.
Does this replace my factory calipers or electronic parking brake?
No. The kit includes carbon-ceramic rotors, pads, hats, and floating hardware; it is intended to work with the compatible factory brake architecture for the listed X290 trims. The rear setup retains the factory parking-brake arrangement when matched to the correct 360 mm rear fitment.
Why switch from OEM iron rotors to carbon ceramic on this car?
On a heavy AWD AMG GT 4-Door, repeated high-speed braking puts heat into the front axle quickly. Carbon-ceramic rotors reduce rotating mass compared with iron, produce much less visible dust, and maintain more consistent friction behavior at temperatures that can make iron rotors discolor, wear quickly, or develop vibration.
What should I verify before placing the order?
Verify model year, trim, front rotor diameter, rear rotor diameter, wheel clearance, and whether the car currently has iron or AMG carbon-ceramic brakes. GT63S and GT63 cars require extra attention because this page supports both 390 mm and 402 mm front references depending on configuration.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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