18. If you wish, you can purchase a 2 1/2-ton military axle from Chuck's Trucks sans brakes. However, Chuck's Trucks offers two bolt-on braking options. The first is a driveline brake kit, which installs easily using a Chuck's Trucks custom laser-cut bracket. Driveline brakes are for off-road use only, because using a driveline brake on the street not only is unsafe, but it tends to quickly wear the pinion bearings on the 211/42-ton axles. For slow trail travel however, the kit works great, and it uses a standard over-the-counter rotor and caliper.