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RAM Mounts U-Bolt Base
  • RAM Mounts U-Bolt Base - Black Aluminum
  • RAM Mounts U-Bolt Base - Chrome Aluminum
  • RAM Mounts U-Bolt Base - Stainless Steel
  • RAM Mounts U-Bolt Base - Black

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RAM Mounts Rail U-Bolt Base With 1" Ball Mount

The RAM Mount U-Bolt handlebar base contains a 1" rubber ball designed to sit at right angles to the mounting rail. Included are black cover caps to be placed over the exposed ends of the u-bolt. Both the black aluminum and stainless steel options come with a composite adapter that can narrow the rail to a minimum width of 0.5".

U-Bolt Dimensions:

  • Black version accommodates rails from 0.5" to 1.25" in diameter
  • Chrome version accommodates rails from 0.5" to 1" in diameter
  • Stainless Steel version accommodates rails from 0.5" to 1" in diameter


  • Powder Coated Marine Grade Aluminum or Powder Coated Marine Grade Aluminum with Chrome Finish
  • Stainless Steel with natural finish

Ball Size:

  • 1" Rubber Ball "B" Size
Product Style RevZilla Item # Manufacturer Product # Availability
Chrome Aluminum 869125 RAM-B-231CHU In Stock: Ships within 24 hours
Black Aluminum 869154 RAM-B-231ZU In Stock: Ships within 24 hours
Stainless Steel 1096107 RAM-B-231U In Stock: Ships within 24 hours


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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

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Write a Product Review for a chance to win our monthly $100 giveaways.
RAM Mounts U-Bolt Base 4.7 5 24 24
Steady device holder Very steady and solid device holder. Easy to install and works great! May 11, 2016
Great adapter Works exactly as described. I used this to mount my RAM mount to the handlebars of my bicycle/motorcycle. May 3, 2016
Works as designed! Ram Mounts are well designed and makes great products. Can't go wrong with them. April 12, 2016
Ram is Ram Like any other Ram product, it works very good. recommended. March 25, 2016
best there is good sturdy unit, does its job and does it well will only buy ram mounts January 19, 2016
Works like a charm! My Audace has Bluetooth which interfaces with the Moto Guzzi iPhone app to display various pieces of information about my bike. The Audace, like most cruisers, doesn't come from the factory with a phone mount. I went to a local motorcycle accessory store (sorry Revzilla, I needed it immediately...or so I thought) and they had a kit that included a Ram Mount X-Grip to hold the phone and a fork stem mount. The fork stem mount seems to work but I'm not 100% certain that it won't start moving around a little. Worse, the drag bars on my bike limit the adjustment so when the sun starts glaring off the screen it is difficult to quickly move the phone without stopping the bike. Revzilla to the rescue! I ordered the U-Bolt base and installed it on my handlebars near the left grip. It mounts securely without any wiggling or wobbling. Even better, it allows the X-Grip to be clear of the bike so I can adjust the position of my phone all I want. I subtracted a star because I consider it a bit pricey for a u-bolt, 2 screws, and 2 nuts. However, that is typical for Ram Mount items in general and at least the quality is there. It does come with a couple of black rubber caps to put over the end of the bolts/nuts but I'm pretty sure it won't be long until they fly off (which is no big deal, I don't think it looks bad without them). My only suggestion for potential owners is that you'd do well to invest in some Plasti Dip and rubberize the u-bolt where it makes contact with the handlebars. I haven't gotten around to it yet and my bars haven't been scratched but it's not worth the risk of marring the finish. If this is a solution for your mounting problem then you can't go wrong with the Ram Mount U-Bolt Base. August 22, 2015
Easy Versatile mount system. I use it on both my bikes. June 15, 2015
Pallet on my bmw k1600gt If you ride and have a cell phone, you need this product. I have this in combination with the short arm and x-holder. It's secure and never moves. It's a must have. Now for a Bluetooth lol May 27, 2015
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