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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 

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RAM Mounts Cradle Adapter
Already Asked: 2 Questions, 16 Answers
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RevZilla Store asked: Why did you choose this?
Chris T: This works perfectly for mounting the finger grip. Apr 25, 2015
Alan C: For a Sirius Radio mount Apr 17, 2015
John S: To hold finer grip holder to 6" universal arm. Apr 15, 2015
Jonathan R: Mount on back of phone holder Apr 6, 2015
charlie s: I chose this because it is required to use the RAM mounts. Apr 3, 2015
Chad H: It goes with the GPS holder that I ordered. Mar 28, 2015
Jon T: To mount up my phone so I can text and ride at the same time ;) Mar 20, 2015
Sverre A: I chose the square one to attach my RAM Universal Finger Grip to my moto. Mar 1, 2015
Colin S: This will install on the pre-drilled holes of my AltRider luggage rack. Dec 16, 2014
KEIKO C: Ram mounts are always great quality, wanted this one to share the bracket with the x-mount and a Montana GPS mount.

Oct 21, 2014
Peter R: Needed for the Nuvi 700 series holder to attach. Sep 27, 2014
Sean W: Because you didn't have the one I wanted, which is the 1"x2" base. Sep 16, 2014
Eric F: to mount my iPhone to my Harley Mar 25, 2014
L E: Necessary for the GPS mount I purchased. Feb 23, 2014
Wilson L: Fits back of Garmin Oregon mount cradle. Sep 24, 2013
Chih H asked: Does the square mount perfectly fit the 2014 Kawasaki Ninja 650? Dec 6, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
Dayle M: Measure the mounting hole distance, or just buy one and re-drill as required. Jan 13, 2015
Reply to Dayle Good answer? Yes (0) No (0)
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