The SuperSteer® Motion Control Units are a simple, effective and inexpensive solution to common issues in air bag equipped vehicles. They control excessive sway, body roll, bounce and rocking motions. The MCU installs in the air bag supply line(s). It contains a baffle that prevents rapid movement of air into and out of the air bags. The result is significantly improved compression, reduced sway, increased stability and stronger rebound characteristics. All of which means a smoother ride. The MCU can be installed on the front and rear air bags. Also, different baffling ranges are available to achieve the desired ride quality and air suspension sway control. Sold as a set of 2