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Disc Brakes - Definition of Disc Brakes

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Disc Brakes - Definition of Disc Brakes

Rear disc brake

Lyot/Flickr
Definition:

Disc brakes on a bicycle are brakes that slow the bike by acting on a disc mounted on the hub of the wheel. This is different from standard brakes, which press against the rim of the wheel.

With disc brakes, a rotor disc is mounted on the hub or axle and it spins inside a set of callipers attached to the frame or fork. Brake pads mounted on the callipers squeeze together on the disc to slow the wheel's rotation when the brake is engaged.

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