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RAM Mounts U-Bolt Base
  • RAM Mounts U-Bolt Base - Black
  • RAM Mounts U-Bolt Base - Black
  • RAM Mounts U-Bolt Base - Chrome

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

The RAM-B-231 and RAM-B-231CH 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.

U-Bolt Dimensions:

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


  • Powder Coated Marine Grade Aluminum or Powder Coated Marine Grade Aluminum with Chrome Finish

Ball Size:

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


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RAM Mounts U-Bolt Base 4.7 5 19 19
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
Works as intended This RAM mount does exactly what I want it to do (attach my phone to my handle bars) but I wish the U part was rubber coated as opposed to painted metal. It will scratch your handle bars if you don't put tape on them first. Minor gripe. April 29, 2015
Easy to install and works perfectly. Super easy to install and super secure. I have complete confidence that this will hold my devices safely. April 13, 2015
Solid as a rock I love the RAM mount equipment. I can move my GPS from one bike to another quickly, easily and reliably. April 10, 2015
Great for my Vstrom This fit perfectly on the handlebar of my Vstrom. I ordered two but so far have only used one to hold my phone. April 6, 2015
RAM Mounts are great. I really enjoy the versatility they provide. I can put all kinds of mounts on it. Radar, phone, GPS, spot light, coffee mug holder, DVD player. March 2, 2015
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Have a functionality, fit, or otherwise product-specific question about the RAM Mounts U-Bolt Base? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

RAM Mounts U-Bolt Base
Already Asked: 3 Questions, 31 Answers
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RevZilla Store asked: Why did you choose this?
Peter U: Its is what fit my bike. Sep 27, 2015
Christopher S: These things are awesome. They help with any gadgets! Sep 15, 2015
brad s: want to use my GPS hopping this will keep it steady so it will be nice & clear with out all the vibration. Aug 25, 2015
Mr. H: Need the handlebar mount for my X-grip to better fit my cockpit layout. Aug 2, 2015
lloyd c: because shipping was free with orders over 39.$ Jul 15, 2015
P I: I have RAM mounts on my other bike. I like their products and am getting this for my new bike. Jul 12, 2015
jeremiah r: because its a piece of the phone mount for my motorcycle Jul 11, 2015
shawn g: once you buy into Ram mount it is easy to add new vehicles to your collection. I bought this one piece and the phone mount from the car moves over to the bike May 2, 2015
Alan C: To use with a GoPro on crash guard Apr 17, 2015
Mark J: mount gps Mar 23, 2015
Jacob C: I needed a way to hold my cell phone for GPS. Feb 15, 2015
George J: many mounting options Feb 11, 2015
Anthony M: To attach my phone to my handlebars. Jan 28, 2015
Tracy L: Needed to mount my SONY Action Cam using my current RAM mounts I have on my 2014.5 KLR650. Oct 2, 2014
Andrew R: I have a Samsung Note 2 in a Otterbox and want to be able to see GPS while traveling. Sep 30, 2014
Sean W: I really like torture. Sep 16, 2014
Angel R: great reviews Aug 16, 2014
Christopher M: Easy to mount on the handlebars- may change to a different model eventually but this will get it started. Aug 12, 2014
Christopher Z: Needed a mount for a camera project. Jul 13, 2014
Carmelo B: I have one for my GPS,they work great. I stand behind Ram Mounts Products May 31, 2014
James A: I have a whole ram set up on one of my motorcycles to attach my GPS. I have been happy with the mounting system. I want to attach to a second motorcycle. May 17, 2014
Thomas B: needed another ball mount May 10, 2014
Connor F: Needed it for my iphone 5 holder May 5, 2014
Charles Y: Need a place to mount my GPS Apr 22, 2014
Richard G: Currently have a mount that places the GPS higher than I like ... this mount will reduce the mounting position by at least 3". Dec 7, 2013
Jason S: I have used RAM products in the past, and the quality is great. Sep 20, 2013
Chad J: Mount gps to my bike. Works great! Aug 30, 2013
A shopper asked: Will this mount work on a 2000 Electra glide? Dec 19, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
Kyle S: measure your handlebar diameter with a soft tape measure and check the clamp diameter with Ram Mounts. Feb 14, 2015
Reply to Kyle Good answer? Yes (0) No (0)
Dayle M: If it is for 1" bars, not 7/8" it will for fine. Jan 13, 2015
Reply to Dayle Good answer? Yes (0) No (0)
A shopper asked: Will this fit the Garmin Nuvi 200 mount? Jun 24, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
Federico M: This is just the base and that is for a handle bar. Go to ram mounts website and it will let you know what is the right dock for your gps device. That's how I did it. Good luck ! Jun 24, 2014
Reply to Federico Good answer? Yes (0) No (0)
MANAN B: I couldn't answer that question for you. I used it to mount a cell phone/gps holder so I don't know what that Nuvi mount looks like or if it's compatible. Jun 25, 2014
Reply to MANAN Good answer? Yes (0) No (0)