An essential part of any bicycle, brakes bring your two-wheeled steed to a stop. Standard caliper brakes are seen most often on road bikes. They work by squeezing a rotating wheel against a set of brake pads.
A disc brake does a similar job, but this time the calipers squeeze against a disc brake rotor rather than a wheel rim. At Cycle Republic we list brakes from SRAM, Shimano and Clarks amongst others.