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RAM Mounts Stem Base
  • RAM Mounts Stem Base - Black
  • RAM Mounts Stem Base - Black
  • RAM Mounts Stem Base - Black
  • RAM Mounts Stem Base - Black

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RAM Mounts Stem Base With 1" Ball

The RAM-B-342 fork stem mount is one of the cleanest ways to mount small electronics on your motorcycle. Simply slide the assembly into the hole of the stem and tighten the machine screw to create a tight fit. This part is designed to fit into the cylindrical bore wall of fork stems and will work with stems that measure from 12 -20mm and 28mm or 0.5” – 1.10” at the following intervals:

Metric       Standard
12mm          0.5”
14mm          0.55”
16mm          0.63”
18mm          0.71”
20mm          0.79”
28mm          1.10”


  • Powder Coated Marine Grade Aluminum

Ball Size:

  • 1" Rubber Ball "B" Size


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RAM Mounts Stem Base 4.5 5 13 13
easy upgrade the product was easy to install and works perfect, highly recomend!! May 25, 2015
I varied from instructions The instructions show you to use a washer at the top of the rubber insert. I left it out and made grooves where it contacts the rubber with the sides of a thin file from HF, in the top aluminum ball mount, similar to the bottom plastic piece. This holds the mount from spinning without having to tighten it down so hard. For larger stem sizes you need the washer to compress the insert but should be able to come up with something similar like cutting a small piece of the insert, place ontop of the washer, and performing the same modifications to the mount. I also cut the insert so it was semi-hard to push down the stem but not impossible to remove. After all of this, It is solid and it hard to move. Don't move it too much without loosening as the grooves that have been cut may chew up the rubber. That or start with less grooves, or smooth it out. I used the smallest piece for my 07 cbr600rr. May 19, 2015
Pretty cool Pretty good mount the only problem I had was screwing the bottom nutt on the rubber part got stuck so you have to becareful I was lucky to get it out but second time was a charm it works perfectly holds in tight no problem May 16, 2015
This is a great product..Easy install. Great product and a great quality I highly recommend this product!! March 30, 2015
Great mount I think I may have installed mine slightly incorrectly, but I followed the instructions, so I thought, and it still spins forever, never quite tightens down. But still works perfectly and is extremely helpful! March 16, 2015
This producr works GREAT for my iPhone5 and my Garmin GPS Although this producr works GREAT for my iPhone5 and my Garmin GPS, I've just ordered an iPhone6 Plus that may be too big for the bracket, but I will simply get the larger bracket if I need it. November 3, 2014
Perfect location or my Garmin I bought this mount to relocate my Garmin from the handlebar to the stem. Very easy installation, although it took many more turns of the wrench than I thought in order to get a tight fit. Overall a clean installation. October 31, 2014
Wrong size plug for the application - but great unit otherwise So I went through the online parts finder to select the right application for my bike - a 2004 Honda VTR1000. The base arrived and the plug was the wrong size - too small for the opening in the stem. I solved the problem by whittling the top cylindrical bit to size with an Xacto knife.... a long and painful process, but effective. Once I'd done that, the base worked as advertised. Be warned - don't trust the online parts guide. Double-check all the measurements. October 6, 2014
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Have a functionality, fit, or otherwise product-specific question about the RAM Mounts Stem Base? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

RAM Mounts Stem Base
Already Asked: 5 Questions, 20 Answers
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RevZilla Store asked: Why did you choose this?
craig j: the stem mount will allow for the best protection against wind resistance allowing me to hide my device behind my windscreen. May 21, 2015
Seth R: Perfect location and ease of installation. May 11, 2015
charlie s: Seemed like the best option to mount my Garmin GPS on my Honda VFR800 that would keep it out of the way, but still be able to see the gauge cluster. Apr 3, 2015
Brian B: Because I didn't win the dianese giveaway and now have to buy myself things off my wishlist Mar 30, 2015
Ben R: I wanted my phone mounted right in the middle of my handlebars and not somewhere to the side. Mar 10, 2015
nickolas z: Best product on the market !! Mar 9, 2015
Ryan H: great reviews. Dec 17, 2014
Tom L: Best moto mount you can get. Nov 3, 2014
Chris M: recommended by a friend using the same set up Oct 2, 2014
Chris P: Hold my phone! Sep 23, 2014
Kenneth K: Looks to be about the only way I will be able to mount my phone on the Buell XB9R without it hindering movement. Sep 19, 2014
Nathan K: Its for my phone mount. Sep 5, 2014
Darren K: I have used Ram mounts in the past with great success Aug 13, 2014
Chris R: Recommended by S1000rr forum May 15, 2014
Donnie B: Wanted a clean install solution for mounting my iPhone onto my CBR1000RR. Research said this was the cleanest and most stable solution. Feb 26, 2014
Greg P: It is the only mounting option available that will allow me to position my devices directly in front of me, but keep them protected behind the fairings wind screen. Oct 3, 2013
Michael C asked: Has anyone used this mount for a 2013 Ninja 636? Jan 8, 2015
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NOEL C: Hi, I bought this set and, I have used it in my kawasaki ninja zx-6r 2012. In my opinion is a good and strong mount but the installation problem was that I had to cut and scrape the bottom part of the piece that has the ball, because it had interfered with the free movement of the ohlins damper in the handle. I think that the RAM mouts must be tested before for a specific motorcicle. Feb 4, 2015
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jared e: i did, but after a year of usage it has come loose and wont tighten as good as original. take that as is... Feb 11, 2015
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Chih H asked: Will this fit a 2014 Kawasaki Ninja 650? Dec 6, 2014
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Richard P: It should since it comes with a bunch of different size attachments to fit virtually any upper triple clamp. Dec 6, 2014
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PHILIP O asked: Will this fit a Harley 883 Iron? Aug 4, 2014
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Richard P: This set up will fit on any bike with a hole in the triple clamp or you could probably drill a hole to make it work. Great set up and totally adjustable. Aug 4, 2014
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christopher s asked: Is this product compatible with a 2015 hayabusa? May 18, 2015
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Product Style RevZilla Item # Manufacturer Product # Availability
Black 869159 RAM-B-342U In Stock: Ships within 24 hours