Braking
Brake disc
The metal track fixed to the wheel that the pads clamp onto.
How it works
The disc spins with the wheel; the pads clamp onto it to create braking force. It wears thinner over time and can warp after overheating, causing pulsing at the lever. Once below the minimum thickness or warped, it must be replaced (ideally as a pair at the front).
Maintenance tips
- Have the thickness and runout measured.
- Avoid continuous braking on long descents (overheating).
Related symptoms
⚠️ The information on this page is provided for educational purposes to help you understand the role and operation of the part. It replaces neither a physical inspection nor the judgment of a certified mechanic. Before any work on a safety-critical component (braking, steering, transmission, suspension), have the part's condition confirmed by a professional.