Patent Pending

RAM® Tough-Claw™ Small Clamp Base with Ball

Part#: RAP-B-400U
UPC: 793442943539

Kit Components

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$41.99

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.

Overview

The RAM Tough-Claw™ Small Clamp Base (RAP-B-400U) features tool-free installation and removal on round, square, and irregular-shaped rails and bars. The Tough-Claw™ tightens with a turn of the knob, securing to rails with an outer diameter from 0.625"–1.5" and to flat surfaces with a thickness from 0"–1.14". Integrated rubber pads inside the clamp help protect mounting surfaces, minimize scuffs and marring, and enhance grip for added stability. This base is ideal for mounting phones, action cameras, small tablets, and rod holders for rod storage. Popular mounting locations include aircraft yokes, bicycle handlebars and seat posts, kayak rails, and roll bars.

Features

  • Small version designed to quickly clamp to round, square, and odd-shaped rails and bars ranging from .625" to 1.14" in outer diameter; rubber pads provide stable gripping and protection of mounting surface
  • Ideal mounting base for phones, tablets, cameras, rod holders, and much more; includes 1" B size rubber ball for attachment to RAM® double socket arms
  • Made of high-strength composite and stainless steel hardware for durability and reliability in the most demanding environments
  • Backed by a lifetime warranty

product dimensions:

Overall Height: 4.24"
Overall Width: 1.18"

clamp range:

.625" - 1.14" diameter

ball size:

B Size (1")

weight capacity:

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

materials:

High strength composite

packaging type:

Poly Bag

Weight:

0.33 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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QUESTIONS & ANSWERS

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  • Length from socket ball center to claw center on the RAP-B-400U

    The length from center of the ball to the center of hte claw is about 3"

  • what is the part number for the 1" B-size ball used here by itself?

    The part number to the 1" ball on this claw is RAP-B-397BNHU

  • I have a 2021 HD Road King would the small base clamp fit the handle bars

    As long as your handlebars are between .625" and 1.14" in diameter, this will be a solid base mount for your application.

RAM® Tough-Claw™ Small Clamp Base with Ball
$41.99

Add-on & Accessories

B Size Double Socket Arms
See All
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