- RGT24: (12-Ton Tandem Axle Running Gear, Wide Tread Width W/Ext. Pole, 6 Bolt 10"X15" Rims Std. 2-1/4" Spindle Less Tires)
- RGT28: (14-Ton Tandem Axle Running Gear, Wide Tread Width W/Ext. Pole, 8 Bolt 10"X15" Rims Std. 2-1/4" Spindles Less Tires)
- RGT36: (18-Ton Tandem Axle Running Gear, 80" Tread Width W/Ext. Pole, 8 Bolt 10"X16" Rims Std., 2-3/4" Spindles Less Tires)
- RGT44: (22-Ton Tandem Axle Running Gear, 80" Tread Width W/Ext. Pole, 8 Bolt 10"X16" Rims Std., 3" Spindles Less Tires)
- WS2: (2 Wheel Surge Brakes)
- WS4: (4 Wheel Surge Brakes)
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