Disc brakes work by using friction and hydraulic power. The friction is generated when the brakes (stationary pads mounted to the suspension system) rub against metal discs turning with the wheels.

There are 3 basic components in a disc brake system.

- The energy supply
- The transmission hose
- The caliper unit

This is how it works...

- When the brake is applied, the master cylinder in the energy supply unit displaces hydraulic brake fluid under pressure to the rest of the brake system.
- The brake fluid is transmitted through the hose to the caliper unit.
- The caliper system ensures that one brake pad is pushed against the inner surface of the disc while, simultaneously, the other pad is pulled against the outer surface. This gives twice the braking power.