While your fork may seem like one seamless unit, each leg controls a different function. That’s why the right leg generally has controls for rebound and compression, while you just adjust your air pressure on the left.
Perhaps the easiest way to understand why is be examining a coil shock. This component is comprised of two main components: the coil spring and the damper. A spring stores energy. When you compress it, it exerts an equal force upwards. To control this motion, we use a damper.
Sounds simple enough, but there’s a lot more to it. To learn more about the fundamental differences between springs and dampers and how they affect your ride, we turn to the experts at Vorsprung.