Over the years, both recline and tilt technologies have evolved. Most significantly for power recline was the incorporation of a raised pivot point to reduce the amount of shear or displacement of the back support surface against the consumer. However, there are many additional factors which can alter the effectiveness of this shear reducing component. Mounting orientation and the thickness of seat cushions and back supports affect the amount of shear with recline. This session will review the mechanics of recline systems, shear reduction and the extrinsic factors which alter their function.