The PowerStep XL drops its 6" step up to 3" farther than AMP Research's standard PowerStep, which is the difference that counts once a vehicle has been lifted. It still works on its own, swinging out as a door opens and folding away under the body once the doors are shut. Every board is rated to 300 lb per door and lit by LED lamps for footing after dark. Part number 77155-01A is the Hard-Wire (non-Plug-N-Play) version for the 2010-2021 Toyota 4Runner.
What's Included:
- Running boards
- Mounting rail assemblies
- Motor linkage assemblies
- Idler linkage assemblies
- Motors
- Wire harness
- Step controller
- LED step lamps
- End caps
- Mounting brackets
- Wiring connectors
- Mounting hardware
Features
Up to 3" more reach down
The XL is engineered to deploy up to 3" lower than the standard PowerStep. On a lifted pickup or SUV that extra drop shortens the first step up from the ground, and it is the reason this model exists.
The same automatic action
Open a door and the board swings down; close the doors and it folds back under the body. There is no lever or switch involved in everyday use.
Out of sight on the move
Retracted, the board disappears beneath the vehicle, so the body lines stay clean and ground clearance is left as it was, which matters on a truck built to go off pavement.
Same 300 lb rating, stainless pivots
Each XL board is rated for up to 300 lb per door, matching the standard PowerStep, and its pivots use stainless steel pins and hardware where a step takes its wear.
Aluminum under a tough coat
Corrosion-resistant aluminum is finished in a textured black powder coat that resists salt, mud and pressure washing.
Lit and slip resistant
The 6" wide step surface is slip resistant, and LED lamps light it as it deploys, so the lower step is easy to find in the dark.
Plug-N-Play or Hard-Wire
Plug-N-Play versions read the door signal from an OBD-II plug-in module, while Hard-Wire versions splice into the vehicle's wiring. The title for each vehicle names the version, and both involve electrical work at install.
Fitment & Compatibility
Toyota
| Years |
Model |
Bed |
Notes |
| 2010-2013 |
4Runner |
|
Trail |
| 2014 |
4Runner |
|
SR5 or SR5 Premium or Trail or Trail Premium |
| 2015-2016 |
4Runner |
|
SR5 or SR5 Premium or TRD Pro or Trail or Trail Premium |
| 2017-2019 |
4Runner |
|
SR5 or SR5 Premium or TRD Off Road or TRD Off Road Premium or TRD Pro |
| 2020 |
4Runner |
|
SR5 or SR5 Premium or TRD Off Road or TRD Off Road Premium or TRD Pro or Venture |
| 2021 |
4Runner |
|
SR5 or SR5 Premium or TRD Off Road or TRD Off Road Premium or TRD Pro or Trail or Venture |
Fit guidance: Fits the 2010-2013 Toyota 4Runner (Trail); the 2014 Toyota 4Runner (SR5 or SR5 Premium or Trail or Trail Premium); the 2015-2016 Toyota 4Runner (SR5 or SR5 Premium or TRD Pro or Trail or Trail Premium); the 2017-2019 Toyota 4Runner (SR5 or SR5 Premium or TRD Off Road or TRD Off Road Premium or TRD Pro); the 2020 Toyota 4Runner (SR5 or SR5 Premium or TRD Off Road or TRD Off Road Premium or TRD Pro or Venture); the 2021 Toyota 4Runner (SR5 or SR5 Premium or TRD Off Road or TRD Off Road Premium or TRD Pro or Trail or Venture), as the Hard-Wire (non-Plug-N-Play) version, so confirm your cab, engine and trim level against these notes before ordering.
Specifications
-
Step material: Aluminum
-
Finish: Textured black powder coat
-
Step width: 6"
-
Step length: Cab length; trimmed to fit on some shorter cabs, per the guide
-
Mounting: Mounts to the rocker panel area with vehicle-specific brackets
-
Load rating: Up to 300 lb per door
-
Hinge pins and hardware: Stainless steel
-
Step lighting: Integrated LED lamps
-
Operation: Deploys when a door opens, retracts when the doors close
-
Deployed height: Up to 3" lower than the standard PowerStep
-
Door-signal connection: Hard-Wire
-
Installation: Professional installation recommended
-
Warranty: AMP Research limited warranty
-
Part number: 77155-01A
-
UPC: 815410014925
Installation
Type: Hard-Wire · Time: 3 to 5 hours · Tools: Safety goggles, Measuring tape, 10 mm socket, 10 mm ratchet wrench, 13 mm ratchet wrench, 15 mm ratchet wrench, Ratchet wrench and extension, Pliers, Wire crimpers, Wire stripper / cutter, 3/16" Hex key wrench (allen wrench), Electrical tape, Weather proof caulking (silicone sealer), 1/8" Drill bit, 9/32" Drill bit, Drill, Heat Gun, 6" Extension, Torx T-25 Driver · Drilling: No drilling step in the guide for this vehicle · Difficulty: Level 4 of 4 (experienced); professional installation recommended
Each XL kit is built for one vehicle and carries mounting rail assemblies along with the motorized and idler linkages, a controller and a harness. Some applications bolt to existing mounting points while others need holes drilled; the guide for your vehicle says which, and the listing never assumes. The wiring is joined with crimp or Posi-style connectors, so plan for electrical work as well as the bolt-up, or book the job with a shop. Torque every fastener to the value the guide gives for it, and afterwards open each door in turn to confirm the boards deploy and the lamps light.
Resources
Warranty, Shipping & Returns
Warranty. AMP Research's limited warranty covers the PowerStep XL against faults in materials or workmanship, provided the boards were fitted per the supplied instructions. AMP Research decides whether to repair or replace a faulty part, and the labor to remove or refit it is the owner's. Cover is for the first buyer and lapses once the boards leave their original vehicle or that vehicle is sold; misuse, accident damage, bad installation, modification, neglected maintenance and road hazards are excluded.
Inspect on delivery. Before signing for the carton, look over the boards, rails, linkages and motors, and write any damage on the delivery paperwork on the spot. Then check the contents against the parts list in the guide ahead of installation day, so a missing piece is found while there is still time to replace it.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About AMP Research
AMP Research makes powered running boards, bed steps and bed extenders, and its PowerStep line of power-retractable boards dates back to 2002. Under its limited warranty the company answers for faults in materials or workmanship on products fitted as its instructions describe; the cover runs to the first buyer and lapses if the product leaves its original vehicle or that vehicle is resold.
The XL sits beside the standard PowerStep as the model for raised vehicles: same aluminum board, same 300 lb per door rating, but a deployed step up to 3" lower. AMP Research's other powered boards take different directions. The PowerStep Xtreme uses two motors a side for snow, ice and mud, the PowerStep Vision builds LED edge lighting into the board, and the PowerStep Smart Series adds phone-app control. The BedStep, BedStep2 and BedXTender HD models round out the range for pickup beds.
Across the brand's running boards the build is consistent: corrosion-resistant aluminum with a textured black powder-coated finish, stainless pivot pins and fasteners, and integrated LED lamps. Kits are engineered per vehicle, and AMP Research holds patents on the design.