BMR 64-72 A-Body Front & Rear Sway Bar Kit w/ Bushings - Black HammertoneThe two primary functions of sway bars are to control body roll and to determine the understeer or oversteer behavior of a vehicle. Stock sway bars have low torsional spring rates because they are manufactured from small diameter bar stock or tubing. BMR Suspensions SB028 front and rear sway bar kit was designed by factoring in the vehicle weight, application, motion ratio, and coil spring rate. Manufactured from heavy duty, solid 32mm bar stock