Disclosed is a suspension for a bicycle. The suspension has a swingarm having a front and rear end and wherein the rear end is configured to attach to a rear wheel of a bicycle, an upper and lower link both adapted to pivotally connect the swing arm to the frame of a bicycle, and a jackshaft having a drive side and a non drive side sprocket and being connected to the front end of the swingarm, the suspension configured such that when in use with a bicycle, a chain connects a drive side front crankset to the drive side jackshaft sprocket and a second chain connects the non drive side jackshaft sprocket to a rear wheel sprocket and wherein the arrangement allows the rear wheel of the bicycle to move rearward and upward in use.