The braking system in the original design of the downhill fourcross cycle consisted of traditional bike brakes reversed so they face the rider. With hands strapped or taped to the brake levers, riders would brake by pushing or leaning forward. However, unintentional braking was hard to avoid: firstly, riders tended to sit leaning forward, resulting in some forward pressure on the brakes; secondly, steering required some forward pressure.
In CSM FourCross’ design, small pedals are attached to motorcycle throttle-style twist grips connected to the brake levers. With hands strapped to the twist grips and forearms resting on the pedals, riders brake either by rotating the grip through wrist action, or by leaning forward and lowering their elbows. Since the system is spring-loaded, riders are able to rest their hands on the pedals and steer without braking. Read the story here: minesmagazine.com/9252/