Motorcycle shock breaker consist a tube fill with oil. The oil volume determine the shock breaker performance
to reduce shock force. This research is aimed to get the effect of oil air ratio due to motorcycle shock breaker
performance. The research is done by determine the amplitude and frequency of the vibration which measure by roll
paper recording. The oil volume is vary as 60, 70 and 80 ml. The oil pressure is measure with manometer. The pressure
data is used to count pressure force based on telescopic cylinder area. The result shows that oil volume has effect due to
shock breaker performance. The result also shows that oil volume has effect due to the vibration.