Motorcycle Fork: The component that holds the front wheel to the motorcycle frame and allows the rider to steer.
Hub Center Steering: A type of front end steering and suspension mechanisms on motorcycles. In hub center steering design, a swingarm connects the wheel to the bottom of the frame. Hub center steering designs allow the steering, suspension and braking functions to be separate, unlike motorcycle forks, which are all one unit. Hub center steering allows for easier riding on rough or rocky terrain, because the design functions as a kind of shock absorber.
Petcock: Also called a petrol tap, a petcock is a fuel valve which is located on or near the fuel tank which controls the amount of fuel distributed to the engine.
Saddle: A motorcycle seat. Motorcycle saddles are frequently large enough to carry two riders.
Swingarm: The primary component of the rear suspension in motorcycles. A swingarm secures the rear axle while pivoting in order to absorb the trauma from the road.
Cush Drive: A portion of a motorcycle drive train that prevents the stress from engine torque from damaging other internal components.
Moped: A type of low powered motorbike that can range from a bicycle equipped with a motor, to a small motorcycles whose speed does not exceed 30 miles per hour. Mopeds can have bicycle pedals in addition to motors, but some even have three and four wheels.