The invention is directed to vehicle suspension systems and components thereof including attachment devices for mounting an axle alignment and/or load reacting mechanism to an axle. Disclosed herein are axle towers used for connecting a torque box to an axle. The axle tower of the present invention can include one or more features to absorb and disperse loads to the axle. The axle tower has a more contoured or curved edge on the side plate that experiences a compressive force than a similar edge on the side plate that experiences a tensile force. Furthermore, the axle tower has appendages that extend out from the side plates providing a large footprint on the axle housing. At least one of the appendages extending from the side plate experiencing a compressive force has a curved or radiused corner. Also, the axle towers include an inner plate having an off-centered slot where the troque box connects. The off-centered slot provides additional material to absorb the compressive force experienced on one side of the inner plate.