Will Adarac Aluminum Series Ladder Rack Work With Bak Revolver X4 On 2021 GMC Sierra 1500

Updated 04/07/2025 | Published 03/31/2025

Question:

Nobody on the internet seems to be able to answer this question so I wanted to pose it to all of you as it seems like you guys cover a lot of products. Will the Bak Revolver X4 work with the Adarac Aluminum Series on a 2021 Sierra? Thank you! Joe

asked by: Joseph R

Expert Reply:

Hello Joe, thanks for reaching out. The Adarac Aluminum Series Ladder Rack installs into the stake pockets. The Bak Revolver X4 installs inside the bed rails and leaves the stake pockets uncovered, meaning it would be compatible. It will likely be the case that the rails from the ladder rack butt right up against the tonneau cover rails, but at long as the stake pockets are uncovered, it would be possible to install the ladder rack.

What is the bed length on your Sierra? Let me know and I am happy to recommend the correct rack and tonneau for you.

expert reply by: Jesse M

Joseph R.

4/4/2025

Hi Jesse, thanks for your reply, that’s great to hear. I have a 5’8” bed length would love to get help with the correct versions. Looking for a matte black rack to match. Thank you!

Jesse M.

4/7/2025

@JosephR Great! There are different part numbers depending if your truck has the CarbonPro box or not. Here is what you will need: WITH CarboPro Box: - BAK Revolver X4s Hard Tonneau Cover - Roll Up - Aluminum and Vinyl - Matte Black # BAK34ZR - Adarac Aluminum Series Custom Truck Bed Ladder Rack - Matte Black - 500 lbs # A34PM WITHOUT CarbonPro Box: - BAK Revolver X4s Hard Tonneau Cover - Roll Up - Aluminum and Vinyl - Matte Black # BAK62VR - Adarac Aluminum Series Custom Truck Bed Ladder Rack - Matte Black - 500 lbs # A49HG