New to the M4 is a double braking system that allows different resistance levels to be set depending on which side of the TANK you’re pushing or pulling from, as well as eliminating the need for weight to be added to the TANK. 

Torque have added an accessory tray in the middle for storage and also made Performance Handles standard.  Weight horns have been made into an optional accessory for more serious performance athletes who wish to use the TANK for intense towing exercises.

Just like the TANK™ M2, the sled's tyres allow it to be used on any surface without fear of damage or noise.  Choose from three levels of resistance on either resistance brake to switch up the intensity of your workout either in different runs or in the same run. Torque’s TANK™ is bi-directional, meaning that there is no need to turn the fitness sled around as you go about your workout. Each grip point has a firm rubber coating which allows the user to get a tight hold. The power and burst that TANK™ provides makes it the ultimate push and pull sled.