AMP Research · New
AMP Research 85in Rail Extrusion
MPN 21-04054-85 · Store SKU amp21-04054-85
Supplier stock checked 11/7/2026, 1:45:46 PM UTC. Adding a part does not reserve it.
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Product details
The AMP Research POWERSTEPXL automatic electric-powered running board is designed for lifted trucks. The board has been integrated into a custom rocker rail and creates a seamless look while providing a 3 in. lower stepping surface than the original POWERSTEP. This allows easier access to and from the vehicle's cab. Learn about the POWERSTEPXL and its features and benefits in this new video. PowerStep™ XL; Incl. OEM Style Illumination; 85 in.; Black; Pair; For Use With PN[77242-01A]; PowerStep™ XL
Manufacturer fitment & guides
Check 21-04054-85 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y