: Versions like the Maxitorque TM 309M feature ultra-low gear ratios (up to 25:1) for extreme power at slow speeds, ideal for steep hills or loose terrain. Technical Specifications (mDRIVE Series)
: The modern standard is the Mack mDRIVE , an automated manual transmission (AMT) that eliminates the clutch pedal while using intelligent software to monitor grade, speed, and acceleration. TRANSMISSION MACK V1.0
: Heavy-duty variants like the mDRIVE HD and XHD can handle up to 2,060 lb.-ft. of torque and are offered in 12-, 13-, or 14-speed configurations. : Versions like the Maxitorque TM 309M feature
In a real-world mechanical context, Mack is defined by its integrated powertrain philosophy, where the transmission is engineered to work in tandem with Mack MP engines and axles. TRANSMISSION MACK V1.0