Carbon ceramic matrix brakes use a carbon-fiber-reinforced silicon carbide ceramic matrix composite, commonly called C/SiC, for the rotor. TEI carbon-ceramic rotors combine this material with a silicon carbide friction coating for consistent braking under sustained heavy use, with TCCB and TCCB-R offering different fiber constructions.
What are carbon ceramic matrix brakes?
Carbon ceramic matrix brakes are braking systems built around rotors made from a carbon-fiber-reinforced silicon carbide ceramic matrix composite. The material is often abbreviated as C/SiC: carbon fiber reinforces a silicon carbide ceramic matrix, while a silicon carbide coating forms the friction surface.
TEI’s carbon-ceramic rotor range is designed for sustained heavy braking and consistent braking behavior. The carbon-ceramic disc collection describes these rotors as supporting lower unsprung weight and consistent stopping power under sustained heavy braking, with no fade. Brake hardware does not independently determine stopping distance: tyres and the pad-rotor friction pair are decisive. The rotor, pad and caliper system instead contributes to pedal feel, consistency and heat capacity.
Two TEI carbon-ceramic rotor architectures are available: the molded short-fiber TCCB and the continuous long-fiber TCCB-R. Both use the C/SiC material family, but their manufacturing processes and intended selection criteria differ.
How the C/SiC rotor construction works
The friction surface is protected by a silicon carbide coating. On the TCCB short-fiber rotor, the coating is 1.1 mm thick. The TCCB-R long-fiber rotor uses a 0.8 mm silicon carbide friction coating. This coated surface is engineered specifically for compatible carbon-ceramic brake-pad compounds.
TCCB is a one-piece molded rotor made with short carbon fibers. This is the volume-production carbon-ceramic process, described by TEI as stable and consistent. It is also the architecture used for OEM high-performance braking on supercars and high-end passenger vehicles.
TCCB-R is built around a continuous carbon-fiber layup. Its long-fiber construction is more complex and higher cost, and it was originally developed for aerospace, ultra-high-speed rail and extreme-performance applications before being adapted for road use. Its main selection advantage is custom sizing and maximum continuous-fiber strength.
Both rotor types are available in diameters from 355 mm to 440 mm. TCCB-R can be custom-made to OEM specifications within that diameter range, while TCCB is available in the same diameter range as a molded short-fiber option.
TCCB and TCCB-R compared
| Feature | TCCB | TCCB-R |
|---|---|---|
| Fiber construction | One-piece molded short-fiber construction | Continuous long-fiber layup |
| Manufacturing role | Volume-production carbon-ceramic process | More complex, higher-cost carbon-ceramic process |
| Silicon carbide friction coating | 1.1 mm | 0.8 mm |
| Diameter range | 355–440 mm | 355–440 mm |
| Best suited to | Balancing performance with practicality | Custom sizing and maximum continuous-fiber strength |
The practical choice depends on the project rather than on a simple “which is better” ranking. TCCB is intended to balance performance and practicality through molded short-fiber construction. TCCB-R is the option to consider when custom sizing and continuous-fiber strength are the priority. For broader brake-system planning, the big brake kit components and fitment guide provides useful context on how rotors relate to the rest of a brake upgrade.
Temperature behavior and sustained braking
TCCB is specified for stable braking from −40 °C ultra-low temperatures through sustained high-performance use. The carbon-ceramic disc collection also describes the range as providing consistent stopping power under sustained heavy braking, with no fade.
These statements describe the rotor and compatible friction system under the stated use conditions; they are not a promise of a particular stopping distance. Stopping distance depends on the tyres and the pad-rotor friction pair. The brake hardware’s role is better understood through its heat capacity, consistency and pedal response.
Correct pad selection is therefore essential. Carbon-ceramic discs must run TEI CS1 or CS2 compound pads only. These compounds are engineered specifically for the SiC-coated CCB surface. TEI M1, M2, R1 and R2 compounds must not be used on carbon-ceramic discs.
Surface crackle and uncoated edges
Fine hairline cracks in the SiC-coated surface are a normal characteristic of every carbon-ceramic disc. They form because the coating and the disc body contract at different rates during manufacturing. The resulting crackle pattern releases internal stress; it is not presented as a manufacturing defect.
The outer edge and inner bore are intentionally left uncoated. This design prevents edge chipping during assembly and transport. The visible appearance of the friction face and the uncoated areas should therefore be considered when inspecting or handling a carbon-ceramic rotor.
For more information about the appearance and care considerations associated with this rotor type, read TEI’s guide to carbon-ceramic rotor brake dust and maintenance. A separate comparison of carbon-ceramic and steel rotors can also help when evaluating material choices.
What is included and what must be checked?
The TCCB and TCCB-R product listings are for the carbon-ceramic rotor only. Rotor hats, brackets, pads and brake lines are not included. Pads are sold separately, and only TEI CS1 or CS2 compounds are approved for use with these carbon-ceramic discs.
If you already run a TEI brake kit, the existing hat and brackets are the matching pair for TCCB rotors. TCCB-R should be selected with the required custom sizing and OEM specifications confirmed for the application. Vehicle and wheel-package fitment must be checked before ordering; the brake kit fitment technical checklist covers the measurements and compatibility questions that matter for a brake-system upgrade.
- Confirm the required rotor diameter, from 355 mm to 440 mm for the listed TEI carbon-ceramic rotors.
- Choose TCCB for molded short-fiber construction and practicality, or TCCB-R for custom sizing and continuous-fiber strength.
- Use TEI CS1 or CS2 pads only.
- Do not use M1, M2, R1 or R2 compounds on carbon-ceramic discs.
- Confirm whether existing hats and brackets are the correct matching components.
- Remember that the rotor-only listing does not include hats, brackets, pads or brake lines.
Frequently asked questions
What does C/SiC mean?
C/SiC means carbon-fiber-reinforced silicon carbide ceramic matrix composite. In TEI carbon-ceramic rotors, carbon fiber reinforces the silicon carbide ceramic matrix, while a silicon carbide coating protects the friction surface. TCCB uses molded short fibers, and TCCB-R uses a continuous long-fiber layup.
Are hairline cracks on a carbon-ceramic rotor normal?
Yes. Fine hairline cracks in the SiC-coated surface are a normal characteristic of every carbon-ceramic disc. The coating and disc body contract at different rates during manufacturing, creating a crackle pattern that releases internal stress. The outer edge and inner bore are intentionally uncoated to help prevent edge chipping.
Which brake pads can be used with carbon ceramic matrix brakes?
TEI carbon-ceramic discs must use TEI CS1 or CS2 compound pads. These compounds are engineered for the SiC-coated CCB surface. TEI M1, M2, R1 and R2 compounds must not be used on carbon-ceramic discs. Pads are sold separately from the rotor-only product listing.
What is the difference between TCCB and TCCB-R?
TCCB is a one-piece molded short-fiber rotor intended to balance performance with practicality. TCCB-R uses a continuous long-fiber layup and is the choice for custom sizing and maximum continuous-fiber strength. Both are available from 355 mm to 440 mm, while TCCB-R can be custom-made to OEM specifications.