This is a optional anti roll bar kit for the Team Associated B44. The use of anti-sway/roll bars helps stabilize the chassis and keep a given set of wheels in more consistent contact with the surface by not allowing one tire to come off the ground while the chassis is trying to roll under cornering load. This also allows you to run softer springs and oil which can increase forward traction. This anti roll bar set includes two different sizes of anti roll bars, all the necessary hardware for mounting, and complete instructions.