These RAM Force 10.5 twin-plate clutch kits have a strap-driven assembly that quietly transmits in excess of 950 ft.-lbs of torque. They are available with your choice of a 300 Series steel-backed friction disc or a 900 Series sintered iron disc. The kits use a marcel spring--a thin, wavy device that helps to eliminate the go-or-no-go tendency that similar dual disc clutches have. RAM Force 10.5 twin-plate clutch kits include a billet aluminum, SFI-certified flywheel with a steel insert that has sufficient mass to draw heat away from the clutch without distortion.