Four internal ball bearings and a roller bearing, HyperGear, a Triangular Rotor (to keeps things rigid) and an internal Floating Shaft System (to soak up any friction), Aero Wrap. . . The ratio of the 1000 and 2500 models is 6,0:1, the 3000 and 4000 models have a ratio of 6,2:1 and the super fast gear ratio of 7,1:1 can be found at the 3000 HS (High Speed) model.
