UltraShift DM Clutch Image

UltraShift™ DM Clutch

Eliminates the need for a clutch pedal and helps to maximize clutch life.

At the front of the UltraShift 6, 10 and 13-speed transmissions is the UltraShift DM clutch, which engages and disengages without an in-cab pedal.  The AutoClutch uses a traditional two-plate configuration for heavy duty and single-plate for medium duty, complete with soft rate dampers and ceramic facings for smooth engagement.

Medium Duty

Part Number Torque Capacity Input Shaft Notes
121500-1 700 ft/lbs 1.75 / 10 Original equipment part number
121500-EX 700 ft/lbs 1.75 / 10 Service replacement part number


Heavy Duty

Part Number Torque Capacity Input Shafts Notes
121000-1 1650 ft/lb 2.00/10 Original equipment part number
121000-2 1750 ft/lb 2.00/10 Original equipment part number
121000-EX 1750 ft/lb 2.00/10 Service replacement part number for both