A motorcycle's suspension serves a dual purpose: contributing to the vehicle's handling and braking, and providing safety and comfort by keeping the vehicle's passengers comfortably isolated from road noise, bumps and vibrations.
Vincent Black Lightning with Girdraulic front suspension
Telescopic forks on a 1969 BMW
BMW's 1955-1969 Earles fork eliminated and reversed brake dive
Honda TRAC
A motorcycle fork connects a motorcycle's front wheel and axle to its frame, typically via a yoke, also known as a triple clamp, which consists of an upper yoke joined to a lower yoke via a steering stem, a shaft that runs through the steering head, creating the steering axis. Most forks incorporate the front suspension and front brake, and allow the front wheel to rotate about the steering axis so that the bike may be steered. Most handlebars attach to the top clamp in various ways, while clip-on handlebars clamp to the fork tubes, either just above or just below the upper triple clamp.
1968 BMW R60US with conventional telescopic fork
Unusual "trailing bottom link" on a Honda Rune
BMW's version of oil-damped telescopic fork, on a 1939 R12
Ural's variant of the leading link fork