The linkage system of a motorcycle rear suspension is analyzed with a view of increasing the overall performance of the machine as a racing vehicle. The effect of leverage ratio changes on damping and spring stiffness are studied. A parametric variation procedure is performed, using a kinematic analysis program and selection criteria, to redesign the system. Further analysis is performed to define initial stiffness and damping parameters. Finally, track testing and tuning is done, resulting in a design which has found usage on a multitude of national championship winning machines.