Eccentric Systems Quick Torque Cam for Double Pedal Eccentric Systems new Quick Torque Cam is wonderful upgrade that improves your pedals speed and feel The Quick Torque Cam is an Eccentric cam that replaces the return spring arm on nearly any bass drum pedal Using an Eccentric Cam on the return spring reduces the pressure required to push the pedal down, while multiplying the return force generated by the return spring This yields a beater feel with a faster response and with less spring tension which provides more impact .