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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


Product Style RevZilla Item # Manufacturer Product # Availability
Black 869159 RAM-B-342U In Stock: Ships within 24 hours


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RAM Mounts Stem Base 4.4 5 19 19
Great little product I really have enjoyed this mount so far. Makes for a great pairing with my Sena 20s since you can see who is calling and get directions changed quickly. Installation was fairly easy and quick October 27, 2015
Exactly what I needed. This was a great purchase. I was looking for something that I could put onto my bike to allow me to use my iPhone5 while riding. I have a Bluetooth helmet so it is really convenient being able to see what my gps is telling me what to do. I can now use Siri because I can just hold the button without digging through my pocket. This holds really well into the stem of my gixxer too, I can pull pretty hard and it won't budge. July 25, 2015
Great base It took a little bit to get it in and expanded right so it was snug but one in its not going anywhere! June 26, 2015
Amazing product I have tons of people ask me what's holding my phone, and I always tell them about this product. Like other reviewers, it spins forever, but it definitely does not pull out. It's a very secure fit and it holds my Samsung Galaxy S5 extremely well. I can also turn the mount I have sideways to hold my GPS. Once you have the mount, you can swap adapters to make it hold whatever you want held. Great product! June 13, 2015
Does the trick Doesn't ever seem to tighten all the way. Just kinda spins forever but it holds very tight. June 9, 2015
Not secure, can easily spin, or be pulled out. Not risking my phone in it, it wants to spin when my phone is in it.. and I can pull it it with little effort. I fallowed the directions perfectly. Even watched the videos online how to install it. I have built cars. I do all my own maintenance. So I know how do something simple like this, but product just doesnt work, The Rubber just keep expanding never tightening up , until it just pops out because its expanded so much. Maybe its because my bike is brand new so it cant grip . No clue , just wont work. has to be cut to be installed so obviously cant return it now -.-. nice scam May 27, 2015
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
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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, 24 Answers
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RevZilla Store asked: Why did you choose this?
Charles A: needed something to hold my phone firmly whilst riding Nov 18, 2015
Julius T: needed for ram grip install Nov 15, 2015
Fábio Luiz C: I will use this product in my Honda VFR 1200f year 2013 togheter the other itens in this order. My goal is use my iphone6 and waze in my Honda. Thank you. Sep 27, 2015
Justin W: Best phone/ GPS mount on the market! Sep 22, 2015
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
Answer this · Send to friends Good question? Yes (0) No (0)
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
Reply to NOEL Good answer? Yes (1) No (0)
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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