Suspension designed the PHR006 to work well for street performance, drag race, and road race applications. The heavy-duty construction eliminates the deflection seen in stamped-steel pan hard Rods. Other pan hard Rods on the market include rubber bushings that will deflect under heavy loads. The 95-durometer polyurethane bushings of the PHR006 reduce bushing deflection, giving you much-improved, repeatable handling characteristics on the street, starting line, or in aggressive corners. The on-car adjustable design makes the PHR006 great for lowered Mustangs.