A motorcycle shock system has a shock body formed at least partially of
aluminum and an air compressor that provides pressurized air to the shock
body when necessary. A piston held within the shock body defines a rear
air chamber and a forward air chamber on the opposite side of the piston.
Four electrically controlled air valves include a first air valve that
when actuated opens a passage to allow air to flow into the forward
chamber, a second air valve that when actuated opens a passage to allow
air to flow out of the forward chamber to the atmosphere, a third air
valve that when actuated opens a passage to allow air to flow out of the
rear air chamber, and a fourth air valve that when actuated opens a
passage to allow air to flow into the rear air chamber.