One unique feature of the Rover 2000 was the design of the front suspension system, in which a bell crank (an L-shaped rotating bracket trailing the upper hub carrier joint) conveyed the vertical motion of the wheel to a fore-and-aft-horizontally mounted spring fastened to the rear wall of the engine compartment. A single hydraulically damped arm was mounted on the bulkhead for the steering. The front suspension was designed to allow as much width for the engine compartment as possible so that Rover's gas turbine engine could be fitted. The styling outline was first seen in the 1961 prototype T4, a front-engined front-wheel-drive gas turbine saloon, one of a line of gas turbine prototypes built by Rover in the 1950s and 1960s. T4 survives today and can be seen at the British Motor Museum.