A force transmitting assembly 20 transmits force to engage and disengage a driven shaft 28. When the force transmitting assembly 20 is engaged, front and rear annular pressure plates 32, 34 frictionally retain a rotor 36 fixedly mounted on the shaft 28 and stops rotation of the shaft 28. The force transmitting assembly 20 maximizes torque and minimizes inertia by providing friction surfaces with friction material substantially engaging the entire working surface of the rotor 36. The force transmitting assembly includes an axially moveable housing 22 attached directly to a mounting flange 24.