
AMP Research Replacement PowerStep XL Rail Assembly
- Guaranteed FitmentTeam-confirmed fit or money back
- No Sales TaxZero sales tax on every order
- 30-Day Money-Back GuaranteeReturn it within 30 days of delivery for a refund

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Fits the same truck
Features
- The XL rail on its own: A replacement rail assembly for the AMP Research PowerStep XL. It does not include the step assembly.
- 80.5" or 85" long: Two lengths: 21-04054-80.5 (80.5") and 21-04054-85 (85").
- Powder-coated, end caps fitted: The rail extrusion comes powder-coated and assembled with its plastic end caps.
- Carriage bolts in the pocket: In AMP's XL guides, carriage bolts slide into the rail pocket to mount the rail.
- Carries the light brackets: The guides fit the light brackets to the first and fourth bolts from the front.
- Matched to truck and kit: AMP Research says these parts are specific to the vehicle make and model and to the PowerStep series installed.
Description & Fitment
The AMP Research Replacement PowerStep XL Rail Assembly is the rail of the AMP Research PowerStep XL on its own, without the step assembly. It comes in two lengths, 80.5" and 85", powder-coated and assembled with its plastic end caps. In AMP's XL guides, carriage bolts slide into the rail pocket to mount it, and the light brackets fit to the first and fourth bolts from the front. AMP Research says these parts are specific to the vehicle make and model and to the PowerStep series installed.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2019-2021 | Silverado 1500 | Crew Cab only | |
| 2022 | Silverado 1500 | Crew Cab only; New Body | |
| 2023-2024 | Silverado 1500 | Crew Cab only | |
| 2022 | Silverado 1500 LTD | Crew Cab only; LTD (2021 body style) | |
| 2020-2025 | Silverado 2500 HD | Crew Cab only | |
| 2020-2025 | Silverado 3500 HD | Crew Cab only |
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2009-2010 | 1500 | Crew Cab only | |
| 2010 | 2500 | Crew Cab only | |
| 2010 | 2500 | Mega Cab only | |
| 2010 | 3500 | Crew Cab only | |
| 2010 | 3500 | Mega Cab only |
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2009-2014 | F-150 | SuperCrew only | |
| 2015-2025 | F-150 | SuperCrew only | |
| 2022-2025 | F-150 Lightning | — | |
| 2011-2014 | F-150 Raptor | SuperCrew only | |
| 2021-2025 | F-150 Raptor | — | |
| 2002-2010 | F-250 Super Duty | Crew Cab only | |
| 2013-2021 | F-250 Super Duty | Crew Cab only | |
| 2022 | F-250 Super Duty | Crew Cab only; King Ranch Model or Lariat Model or Limited Model or Platinum Model or XL Model or XLT Model | |
| 2023-2025 | F-250 Super Duty | Crew Cab only | |
| 2002-2010 | F-350 Super Duty | Crew Cab only | |
| 2013-2021 | F-350 Super Duty | Crew Cab only | |
| 2022 | F-350 Super Duty | Crew Cab only; King Ranch Model or Lariat Model or Limited Model or Platinum Model or XL Model or XLT Model | |
| 2023-2025 | F-350 Super Duty | Crew Cab only | |
| 2002-2010 | F-450 Super Duty | Crew Cab only | |
| 2013-2021 | F-450 Super Duty | Crew Cab only | |
| 2022 | F-450 Super Duty | Crew Cab only; King Ranch Model or Lariat Model or Limited Model or Platinum Model or XL Model or XLT Model | |
| 2023-2025 | F-450 Super Duty | Crew Cab only |
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2019-2021 | Sierra 1500 | Crew Cab only | |
| 2022 | Sierra 1500 | Crew Cab only; New Body | |
| 2023-2024 | Sierra 1500 | Crew Cab only | |
| 2022 | Sierra 1500 Limited | Crew Cab only; Limited (2021 body style) | |
| 2020-2025 | Sierra 2500 HD | Crew Cab only | |
| 2020-2025 | Sierra 3500 HD | Crew Cab only |
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2011-2014 | 1500 | Crew Cab only | |
| 2015 | 1500 | Crew Cab only; Through 06/2015 | |
| 2018 | 1500 | Crew Cab only | |
| 2019-2023 | 1500 Classic | Crew Cab only | |
| 2011-2023 | 2500 | Crew Cab only | |
| 2011-2014 | 2500 | Mega Cab only | |
| 2015 | 2500 | Mega Cab only; Through 06/2015 | |
| 2018-2023 | 2500 | Mega Cab only | |
| 2011-2018 | 3500 | Crew Cab only | |
| 2011-2014 | 3500 | Mega Cab only | |
| 2015 | 3500 | Mega Cab only; Through 06/2015 | |
| 2018-2023 | 3500 | Mega Cab only | |
| 2019-2023 | 3500 | Crew Cab only; Pickup |
Fit guidance: Choose your vehicle, then match your PowerStep kit's part number to the part's listing before ordering; the parts in this line differ by vehicle, kit and version.
About AMP Research
AMP Research calls its PowerStep the original power-retractable running board, proven since 2002. A PowerStep deploys when a door opens and stows when the doors close.
Each set is built from parts that can be serviced one at a time: the running board (step) assemblies, the motor and idler linkages, the motors, the controller and the wire harness, with an OBD-II module on Plug-N-Play sets. AMP Research says replacement parts are specific to the vehicle make and model and to the PowerStep series installed, so every listing here names the kits it serves.
Authorized AMP Research dealer. Prestige Truck is an authorized AMP Research dealer, so what we sell is new and genuine AMP Research. Tell us your PowerStep part number or VIN before you order and we'll help you match the part.
Frequently Asked Questions
Does one rail fit every PowerStep XL?
No. AMP Research says these parts are specific to the vehicle make and model and to the PowerStep series installed. Each version's page lists the PowerStep XL kits it serves.
How does the rail mount?
In AMP's XL guides, carriage bolts slide into the rail pocket to mount the rail, and the light brackets fit to the first and fourth bolts from the front.
Does it include the step?
No. AMP Research says the rail assembly does not include the step assembly.
Which length do I need?
The 80.5" and 85" rails are each listed for specific trucks and PowerStep XL kits. Match your truck in the fitment table or send us your kit number.
Are there install instructions?
There's no separate sheet for the rail. Follow the complete AMP install guide for your PowerStep model.
Is there a warranty?
No warranty term is published for this replacement part. Ask us before you order and we'll confirm the coverage for your part number.
Installation
Stuck on a step?
Specifications
| Brand | AMP Research |
|---|---|
| Product Type | Replacement PowerStep XL rail assembly (no step assembly) |
| Lengths | 80.5" or 85" |
| Finish | Powder coat, with plastic end caps |
Warranty, shipping & returns
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Warranty
Covered by AMP Research's limited warranty.- Contact us for the terms on this part and for claims help.
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Free shipping
Ships free to the lower 48 states, with no minimum order.- Order by 5 PM ET on a business day and it starts processing the same day.
- Most orders arrive within 1-5 business days.
- We email your tracking number as soon as it ships.
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Inspect on delivery
Check the rail and its end caps for dents or bends as soon as it arrives. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
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30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.












