2025 MACK, MD6, Medium Duty Trucks - Cab & Chassis Trucks, CUMMINS ISB6.7, Automatic, CARB+EPA 2025 MACK MD6: Cummins, 300HP, Allison 6 Spd, 10K/21K on Air Ride, 5.57 rears, 270" WB., 300 Horse Power, Air Ride Suspension, Wheels, 270 Wheel Base, , Axle, 5.57 Ratio, , VIN 1M2MDBAA3SS015233