- HD Models Factory Air Ride Suspension Requires Air Tank Relocation Kit~Purchase Installation Kit Before Installation
- New Body Style
- Old Body Style
- Excludes Chassis Cab Models with Diesel Engines
AMP Research invented the PowerStep™, the automatic, electric-powered running board that instantly extends when you open your door, and retracts out of sight when the doors close for improved ground clearance, aerodynamics and appearance. Its sleek design, all-weather performance and legendary reliability set the industry standard. PowerStep™ has die-cast aluminum alloy components and precision stainless steel pivot pins for rock-solid stability. The original PowerStep™ is American designed and engineered.