The specially blended Polyurethane used in SuperPro products has specific mechanical properties that make it extremely successful in its applications. The combined properties of extreme resistance to abrasion, low compression set, high tear strength, and a resistance to oils and solvents makes SuperPro ideal for automotive applications. These properties lead to a resilient product that is highly versatile in its various applications. 

The crush tubing is an integral component of the suspension bushing system and is necessary for free pivoting. The crush tubes are made to precision tolerances to ensure precise fits are maintained. All SuperPro tubes are made of Steel and are Zinc plated for corrosion protection and appearance. In some applications SuperPro incorporates end knurls and hardened tubes to provide positive location. Where required, SuperPro products provide precision machined steel shells to allow the installer to quickly and easily replace worn components. 

Replaces the stock rubber bushing in the rear hub to improve response of suspension. Comes with 4 bushings and 2 inner sleeves.