RAM® Add-A-Ball™ Accessory Ball for C Size Socket Arms

Part#: RAM-B-273-CU
UPC: 793442028441

Compatibility

Kit Components

$13.49

Overview

The RAM® Add-A-Ball™ Accessory Ball for C Size Socket Arms (RAM-B-273-CU) allows you to connect another device to your existing C-size RAM® Mount. This ball is made up of a 1" ball connecting to a 5/16"-18 threaded stud that replaces the bolt in any Short or Medium C-size socket arm, and the ball connects to the middle of the socket arm on the opposite side of the tightening knob. If you are looking to mount more than one device but cannot locate multiple mounting points, this base is the ideal accessory for connecting both devices off of one mounting base.

Features

  • Replace the bolt in any C size double socket arm to add a 1" B size RAM® rubber ball to your mounting setup
  • Included B size 1" RAM® rubber ball allows for connection to any B size RAM® double socket arm; 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) 5/16"-18 x 4" Bolt
(1) 5/16" Split Lock Washer

ball size:

B Size (1")

weight capacity:

Standard Use: 2 lbs
Heavy-Duty Use: 1 lb

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

0.16 lb

Additional Information:

This ball will not support the long C size socket arm.

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® Add-A-Ball™ Accessory Ball for C Size Socket Arms
$13.49

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size — this product 1" ball
  • C Size 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
B — this product1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C1.5" (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

B Size Double Socket Arms
See All
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