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RAM Mounts Cradle Adapter
  • RAM Mounts Cradle Adapter - Diamond AMPS Hole Pattern
  • RAM Mounts Cradle Adapter - Round AMPS Hole Pattern
  • RAM Mounts Cradle Adapter

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RAM Mounts Cradle Adapter

The RAM-B-202 consists of a 1" diameter rubber ball connected to a flat 2.5" diameter round base. This mount has pre-drilled holes, including the universal AMPS hole pattern.

The RAM-B-238 consists of a 1" diameter rubber ball connected at right angles to a 2.43" x 1.31" diamond base. The base has two holes 1.912" from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.

The RAM-B-347U consists of a 1" diameter rubber ball connected at right angles to a 2" x 1.7" square base. The base has four pre-drilled holes at each corner, making the universal 1.5 x 1.188 (hole spacing) AMPS hole pattern.  This base is designed to hold the following devices:

  • Garmin® zumo™ 400
  • Garmin® zumo™ 450
  • Garmin® zumo™ 500
  • Garmin® zumo™ 550
  • Garmin® zumo™ 660
  • TomTom Rider 2
  • TomTom Urban Rider


  • Powder Coated Marine Grade Aluminum

Ball Size:

  • 1" Rubber Ball "B" Size 

Product Style RevZilla Item # Manufacturer Product # Availability
Black / Round AMPS Hole Pattern 869146 RAM-B-202U In Stock: Ships within 24 hours
Black / Diamond AMPS Hole Pattern 869137 RAM-B-238U In Stock: Ships within 24 hours
Black / Square AMPS Hole Pattern 897419 RAM-B-347U In Stock: Ships within 24 hours


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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.

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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.

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

Write a Product Review for a chance to win our monthly $100 giveaways.
RAM Mounts Cradle Adapter 5 5 5 5
Sturdy, reliable and sound ball. What I immediately saw once I opened the bag was that the diamond base was METALLIC! The ball is covered in a high quality plastic that makes the adjustability of the whole mount precise and sound. Very happy with my purchase of these RAM piece for my Montana GPS mount on my F800GS. November 10, 2014
getting my gps ready item to get gps ready to mount almost done good quality July 28, 2014
stable attachment with all the mix-n-match from RAM, I wasn't sure this would fit. but was pleasantly surprised at both the flexible attachment location and the stability once mounted. August 19, 2013
Good Quality. I put this RAM ball on my left handle bar bolted with the Grip mounting bolts. I use it for my Cell Pone cradle. Works great. February 4, 2013
Ram mount has always been great This is my sixth or seventh ram mount product. It's made very well and fit my accessories without any issues. I highly recommend this product. January 28, 2013
1-5 of 5
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