RAM® ATV/Side By Side Double Ball Rail Mount with 1/4"-20 Threaded Stud

Part#: RAM-B-149Z-2-237
UPC: 793442930010

Compatibility

Cameras

that contain 1/4"-20 Female Threaded Hole

Kit Components

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$61.49

Overview

The RAM-B-149Z-2-237 consists of a medium length B-size double socket arm with a 1/4"-20 threaded stud and an ATV/Side By Side clamp base.

hardware included:

(1) Strap Clamp Adapter
(2) 1/4"-20 x 1" Machine Screws
(2) 1/4"-20 Nyloc Nuts
(1) Zinc Worm Drive Strap Clamp
(1) 6" Rubber Strip
(1) 1/4"-20 U-Bolt for .5" - 1" Rails
(1) 1/4"-20 U-Bolt for 1" - 1.25" Rails
(2) Rubber Caps
(1) U-Bolt Spacer

clamp range:

U-Bolt: .5" - 1.25" diameter
Strap Clamp: 1.57" - 3.15" diameter

socket to socket length:

3"

ball size:

B Size (1")

weight capacity:

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

materials:

Marine-grade aluminum
High strength composite

packaging type:

Retail Bag

Weight:

0.82 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® ATV/Side By Side Double Ball Rail Mount with 1/4"-20 Threaded Stud
$61.49

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

Locking Knobs
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