Free Shipping Over $39.99

Orders $39.99 or more ship free within the contiguous U.S.

Free Shipping Policy

No Restock Fees

Doesn't fit? Don't love it?

Return any unused item within 30 days for a full refund.

No-Hassle Returns

  1. Obtain an RA number
  2. Package your product
  3. Send it back to us!
Return Policy

Price Match Guarantee

Found it for less?

RevZilla will match any advertised price on new merchandise available through another authorized U.S. dealer.

Price Match Policy

Elite Service Rating

Our goal is to provide the best possible shopping experience to every enthusiast who visits RevZilla.

See what our customers are saying about us:

Customer Reviews

ZillaCash Rewards

The ZillaCash rewards program is very straightforward - if you have a RevZilla account, you may already be taking advantage of ZillaCash rewards. Review the following guidelines to see how easy it is to maximize your rewards and put your ZillaCash to work for you.

  • Earn and redeem ZillaCash credit automatically with each order - no fine print, no strings attached, and no hoops to jump through to cash in.
  • All you need is a RevZilla account to start earning - Simply log in each time you shop with RevZilla and we’ll take care of the rest, keeping more money in your pocket just for shopping with us.
  • Earn $5 for Each $100 You Spend on eligible products - up to a maximum of $30 ZillaCash per order for orders totaling $600 or more. Any ZillaCash you earn is automatically applied to the next purchase, so you can sit back, enjoy the ride and feel the savings blow through your hair.
Learn More About ZillaCash

RAM Mounts Stem Base

Item: P231060

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 th… Read More

Learn More

Similar Categories

Product Details


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 # MFR. Product # Availability
Product Style Black RevZilla Item #869159 MFR. Product #RAM-B-342U AvailabilityIn Stock: Ships within 24 hours


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


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.

See our full Return Policy for all of the pertinent details.

Product Description
Part Numbers
Shipping & Returns

Reviews & Questions

4.1 / 5.0
36 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Bang For The Buck
4.0 / 5
3.7 / 5
3.7 / 5
Ease Of Install
2.8 / 5
Fit & Finish
2.8 / 5
Bang For The Buck
5 / 5
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
over 3 years ago
Bang For The Buck
5 / 5
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
over 2 years ago
2014 Kawasaki Ninja ZX-6R ZX636
Bang For The Buck
5 / 5
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
2007 Honda CBR600RR
Bang For The Buck
5 / 5
This is a great product..Easy install.
Great product and a great quality I highly recommend this product!!
March 30, 2015
2013 Honda CBR600RR
Bang For The Buck
5 / 5
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
over 3 years ago
2005 Yamaha YZF-R1
Bang For The Buck
4 / 5
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
over 2 years ago
2008 Suzuki GSX-R600
Bang For The Buck
5 / 5
4 / 5
4 / 5
Ease Of Install
1 / 5
Fit & Finish
1 / 5
Does not fit 2011 Concours
My fork stem has a large hex shaped hole. I watched numerous videos and read numerous blog entries that show this working but this particular fork stem base will not fit into the fork stem hole It's not the rubber compression piece that is the problem, the actual base does not fit flush with the fork stem. To be clear, the compression rubber fitting fits fully into the fork stem but not the actual ram ball itself.

This would have been a great place to fit my RAM ball but unfortunately, I will have to find another option.
July 3, 2017
Bang For The Buck
5 / 5
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
easy upgrade
the product was easy to install and works perfect, highly recomend!!
May 25, 2015
over 3 years ago
Bang For The Buck
5 / 5
Looks good and works better
I was skeptical of how the mount would hold within the stem of my bars. But once I installed it there was nothing that will make it come out. Was lifting the bike up while pulling on it.

I enjoyed this part but some might see this as a negative. It does not come ready to fit, you must essentially build it so that it fits your bike perfectly. I accidentally butchered my cuts on the rubber mount due to my rush but it still worked out just fine. Make sure you take your time and measure your cuts before slicing it, otherwise there's no second chance. Took me maybe 5 min to "build" and another 30 sec to install. Its hard to mess up but its possible so take your time.

Highly recommend!!!
May 20, 2014
2002 Yamaha YZF-R6
36 Customer Reviews
36 4/5
Read All Reviews
11 Questions & 13 Answers
Ask A Question