RAM® Dashboard Mount with Backing Plate & Diamond Plate - C Size Medium

Part#: RAM-138-225B2U
UPC: 793442029509

Kit Components

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$72.49

Overview

The RAM® Dashboard Mount with Backing Plate & Diamond Plate - C Size Medium (RAM-138-225B2U) consists of a double socket arm, one 2.5" diameter round base, one 2.43" x 1.31" diamond base, one 2.10" x 2.60" backing plate, and mounting hardware. Each base features the universal AMPS hole pattern, making them compatible with all RAM® device holders. The mount is designed with a 1" diameter rubber ball and socket system that features adjustment points at both ends of the double socket arm, allowing for near-infinite adjustability for ideal viewing angles.

Features

  • 2.43" x 1.31" diamond base with C size 1.5" RAM® rubber ball connects to RAM® device holders containing the universal AMPS hole pattern; includes C size medium length double socket arm
  • 2.10" x 2.60" steel backing plate provide support for mount when drilling in and securing to thin surfaces, like dashboards
  • Ball and socket technology allows for near-infinite adjustability
  • Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
  • Backed by a lifetime warranty

hardware included:

(1) 2.10" x 2.60" Steel Backing Plate
(4) #8-32 x 1" Machine Screws
(4) #8 Split Lock Washers
(4) #8 Flat Washers

product dimensions:

Overall Height: 7.35"

socket to socket length:

4.66"

hole pattern:

2-Hole AMPS 1.912"

ball size:

C Size (1.5")

weight capacity:

Standard Use: 4 lbs
Heavy-Duty Use: 3 lbs

materials:

Marine-grade aluminum
Steel

packaging type:

Poly Bag

Weight:

1.36 lb

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

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RAM® Dashboard Mount with Backing Plate & Diamond Plate - C Size Medium
$72.49

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size 1" ball
  • C Size — this product 1.5" ball
  • D Size 2.25" ball
  • E Size 3.38" ball

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size Ball Diameter Max Load* Best For
A0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C — this product1.5" (38.1 mm)4 lbsLarge tablets, fish finders, and rougher rides
D2.25" (57.2 mm)6 lbsRugged tablets, laptops, and heavy equipment
E3.38" (85.9 mm)15 lbsLarge displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.

Add-on & Accessories

Knob & Bolt Accessories
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