EXEDY HH01SD Hyper Single All hyper single clutches come with a six puck cerametallic sprung center damper and chromoly flywheel The disc is generally smaller than the oem disc allowing for lower inertia and therefore quicker easier shifting and less wear and tear on the transmission synchros Durability is improved with the use of a stronger smaller damper disc specifically redesigned for the hyper single The higher clamp load and cerametallic friction facings give approximately twice the holding torque of the oem clutch An additional feature is a series of turbine like air flow enhancing vanes that keep the clutch cooler under extreme operating conditions to improve wear life