Diamond Mounting Base Plate With Standard AMPS Hole Pattern



Required for all RAM device cradles when used with a RAM arm. Not required for connecting RAM device cradles to SW-MOTECH Techmount or Adaptive device mounts. read more


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, , ,
0.1 lbs
1 × 1 × 1 in
Electronics Accessories Type:



$7.99 USD


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$7.99 USD

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The Powder Coated Marine Grade Aluminum Universal Plate has a 1.0” diameter Rubber Ball connected at right angles to a 1-1/4” x 2-1/2 ” Diamond Plate. The plate has two holes 1.912” from center to center positioned at either tip of the diamond plate.

NOTE: This base plate will attach to any of the RAM plastic HOL holders and the industry standard AMPS hole pattern.

Click the link at the bottom of the page to view the technical drawings for the RAM-B-238. The pdf file shows the spacing distances for the hole pattern on the plate and the exact location and height of the 1.0” ball.

RAM Mounts System Guide

RAM Mounts is a rugged and versatile system for attaching and mounting phones tablets GPS units cameras and other mobile devices nearly anywhere. This system utilizes ball and socket connections that can be adjusted to provide a multitude of mounting positions and secured to provide stability during use. Once you have selected the universal grip or device specific cradle you are interested in you will need to select an Adapter Plate a Double Socket Arm and then a Mounting Base to attach to your motorcycle.Adapter PlatesAdapter plates are availaible in chrome or black mount to device cradles and provide a B size 1in rubber ball for an arm extension to attach to and articlate from. They have predrilled holes that match the industry standard AMPS hole pattern. 

Double Socket Arms

Double Socket Arms attach between Adapter Plates and Mounting Bases to provide full articulation and can be tightened to a multitude of secured positions.

Mounting Bases

Mounting Bases attach to your motorcycle and provide a secure platform for the RAM system to work from. Attachment points include handlebars control clamps clutch and brake reservoirs fork stems suction cups mirror mounts as well as exposed or replaceable bolts.


Accessories enhance the capabilities of a RAM Mounts system by providing additional mounting options security or convenience options.

Universal Device Holders or Cradles

Universal device holders or cradles provide a secure mounting solution for a variety of smart phones tablets gadgets or other essentials.

Part Numbers

Our part number: RAM-B-238U
Replaces these SKUs: RAM-B-0238U
Manufacturer part number: RAM-B-238U


Product Documents

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