Motorcycle brakes work on the same disc-brake principle as a car, but with a key difference: the front and rear are controlled separately, and balancing them is a riding skill. Here is how motorcycle brakes work.
Disc brakes, separate controls
Most modern motorcycles use hydraulic disc brakes - a caliper squeezing pads against a rotor - just like a car; see how disc brakes work. The difference is the front brake is worked by a hand lever and the rear by a foot pedal, so the rider controls each independently.
The front does most of the work
Just as in a car, weight shifts forward under braking, so a motorcycle's front brake provides the majority of stopping power - often a larger dual-disc setup. Riders learn to use mostly front brake, with the rear for stability and low-speed control.
Heat and fade still apply
Motorcycle brakes generate heat and can fade or boil fluid under hard repeated use, like any brake; see why brakes get hot and brake fluid boiling point. Many bikes now have ABS to prevent wheel lock, which is especially dangerous on two wheels.
Same maintenance ideas
Motorcycle pads, rotors, and fluid wear and age just like a car's and need inspection and replacement on schedule. The friction principles are identical - only the scale and controls differ. For car brakes, fit quality pads and hardware.