Originally Posted by rocky mountain suspesion

Super-trac™ Traction Bars by Superlift can withstand the tremendous torque loads generated by high output engines and large tires. With Superlift's design, the bars' rear-end attaching points are incorporated into replacement U-bolt plates. To further enhance strength and rigidity, the traction rod eyes are supported on both sides. Front mounting brackets feature a slotted hole which enables you to control the amount of rear suspension wrap-up and dial-in the desired degree of "launch". This prevents excessive wrap-up without restricting suspension travel. These are not compatible with contact overload springs.