2020-2026+ Mercedes-AMG CLA45S / CLA35 (C118/X118) Carbon Ceramic Brake Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2020-2026+ Mercedes-AMG CLA45S / CLA35 (C118/X118) Carbon Ceramic Brake Kit — OEM-Size Replacement
The C118/X118 AMG CLA45S and CLA35 use large factory AMG iron brakes for their size, but repeated high-speed stops and track sessions still put heat into a compact front axle package. This StopFlex OEM-replacement carbon-ceramic kit matches the listed AMG rotor references: 360mm front for CLA45S, 350mm front for CLA35, and 330mm rear for both trims. Carbon-ceramic rotors reduce brake dust, cut rotating unsprung mass, and hold friction stability at temperatures that can distort or glaze iron rotors when the car is driven hard.
- Built only for 2020-2026+ Mercedes-AMG CLA45S / CLA35 C118 coupe and X118 shooting-brake applications using the listed AMG rotor sizes.
- Front sizing is trim-specific: 360mm for CLA45S and 350mm for CLA35, so the kit must be matched to the car’s original front brake package before ordering.
- Rear 330mm carbon-ceramic rotors retain the OEM rear brake layout and are supplied with matched pads, hats, and floating hardware.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Mercedes-AMG CLA45S / CLA35 (C118/X118) |
| Model years | 2020-2026+ |
| Front rotor reference | CLA45S: 360mm; CLA35: 350mm |
| Rear rotor reference | CLA45S/CLA35: 330mm |
| Page type | OEM-size carbon ceramic replacement |
| Minimum wheel size | 19" (for the 360 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 360 mm 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.
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 fit both the CLA45S and CLA35?
Yes, but only when the car matches the rotor sizes listed for this page. The CLA45S front reference is 360mm, the CLA35 front reference is 350mm, and both use the 330mm rear reference covered by this kit.
Will my electronic parking brake and auto-hold still work?
The kit is designed as an OEM-size replacement for the C118/X118 rear brake package, so the rear brake architecture remains compatible with the factory electronic parking brake system. Installation still requires correct Mercedes rear brake service mode procedures.
Why switch this AMG CLA from iron rotors to carbon-ceramic?
On the CLA45S and CLA35, carbon-ceramic rotors reduce heat-related fade, lower brake dust on open AMG wheels, and remove rotating mass from the 360mm or 350mm front brake assemblies compared with equivalent iron discs.
What should I confirm before ordering?
Confirm the exact trim, C118 or X118 body, model year, front rotor size, rear 330mm rotor fitment, and wheel clearance. Do not order from trim name alone because the CLA45S and CLA35 use different front rotor references.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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