How do the Yakima Mighty Mounts and the Hully Rollers Attach to Crossbars
Updated 10/27/2025 | Published 03/14/2025
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Question:
Not having held these, I cannot see how Yakima accessories Hully Rollers for instance would attach to them. I may be missing it, but the only way I can see that they might work would be using a longer bolt through the piece where the allen bolt goes, but in this case the hex hole on the bottom seems a poor choice since non of Yakimas longer bolts that I am aware of have allen keys. Your video does not offer any clarity how to use these to mount Yakima products designed for the round bars on factory or Yakima aero bars. THAT would help a lot.
asked by: Peter
Expert Reply:
Hey Peter, thanks for stopping in! I agree a video clarifying how these work would be super helpful. I was also a bit confused so I did a little research and it looks like you wouldn't want to use the Yakima MightyMount # Y03523, you'd want to use # Y03590 instead.
From here, you would connect to the HullyRollers using the included carriage bolt running down through one of the two bolt holes on the roller brackets on each side. I've attached a couple of pictures of what I'm talking about to help you visualize it.
If you have any other questions, please feel free to drop a comment and let me know!
(click to enlarge)
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Product Page this Question was Asked From
Yakima Mighty Mount 23H Accessory Adapter for Factory Roof-Rack Crossbars - Qty 4
- Accessories and Parts
- Roof Rack
- Adapters
- MightyMounts
- Yakima
more information >
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Lazer S.
10/27/2025
Hey Peter, did the Universal MightyMounts end up working better with your HullyRollers? Knowing how that setup turned out could really help others trying to mount Yakima accessories on aero bars.