The AMP Research PowerStep Xtreme is a dual-motor version of the PowerStep, twice as strong as the original, built for extreme conditions. It automatically extends when a door opens and retracts out of sight when the door closes. It is not compatible with Mega Cab models equipped with factory air ride suspension.
Specifications:
- Deployment: Automatic, door-activated, dual-motor electric power step
- Step Boards: 6-inch wide, cab-length
- Weight Capacity: Up to 600 lbs
- Construction: Anodized aluminum with military-grade PTFE-coated finish
- Lighting: Onboard LED step lights
- Installation: Plug-N-Play module, vehicle-specific install guide included; trimming required on Regular and Extended Cab
- Warranty: 5-Year Limited Warranty
- Part Number: 78139-01A
Vehicle Applications:
- 2013 Dodge Ram 2500, Regular/Crew Cab
- 2014 Dodge Ram 2500, Regular/Crew Cab
- 2015 Dodge Ram 2500, Regular/Crew Cab
- 2016 Dodge Ram 2500, Regular/Crew Cab
- 2017 Dodge Ram 2500, Regular/Crew Cab
- 2013 Dodge Ram 3500, Regular/Crew Cab
- 2014 Dodge Ram 3500, Regular/Crew Cab
- 2015 Dodge Ram 3500, Regular/Crew Cab
- 2016 Dodge Ram 3500, Regular/Crew Cab
- 2017 Dodge Ram 3500, Regular/Crew Cab
Note: Manufacturer and retailer fitment data confirm this part number is for the Ram 2500/3500 platform; it is not designed for the Ram 1500.
FAQ
Does this fit the Ram 1500?
No. The 78139-01A PowerStep Xtreme is built for the Ram 2500/3500 platform.
Does it fit the Mega Cab?
Not on Mega Cab trucks equipped with factory air ride suspension.
How much weight can it hold?
Up to 600 lbs per side.
Is trimming required during installation?
Yes, on Regular and Extended Cab models.

