Includes 6 X3 XRS Radius Rods Radius Rods are an essential component of the suspension system. While stock rods are prone to bending, MTS Radius Rods are billet aluminum, and can withstand much more use. Radius Rods also play a vital role in maintaining stability, proper alignment, and handling during your off-road driving experience. Features Higher Quality Materials: MTS Radius Rods are Billet Aluminum, which is much stronger than the stock Radius Rod material.  Appearance : MTS Radius Rods have a more aesthetic appearance and are thicker than stock radius rods.