This is an optional 17T clutch bell from Team Associated. The clutch bell sits over the clutch shoes, and will be engaged when
the engine rpm's increase. It will allow the engines power to pass to
the center spur gear and the rest of the drive train. The smaller the
clutch bell, the more bottom end acceleration the buggy will have, but
with less top end speed. A clutch bell with more teeth with increase
top end for those that are looking for a higher top speed, but will
reduce bottom end acceleration.