Power is transferred from the 129 brake horsepower Rolls Royce B60 Mk 6A through a fluid flywheel and five-speed Wilson pre-selector gearbox. There is no clutch. The Ferret can go as fast in reverse as forward: a top speed of 58 mph. Epicyclic planetary reduction gears in each wheel hub are essential to reduce transmission torque loads. The central H-drive differential eliminates loss of traction due to off-road wheel-slip, allows independent suspension on each wheel and gives high ground clearance. The fording freeboard is 12-13 inches (0.30-0.33 m).