RAM® Ball Adapter with AMPS Plate - B Size

Part#: RAM-B-347U
UPC: 793442907623

Compatibility

Garmin

dezl OTR1000 GPSMAP 276Cx Tread zumo 390LM zumo 396 LMT-S zumo 400 zumo 450 zumo 500 zumo 550 zumo 590 zumo 595LM zumo 660 zumo 665 zumo XT zumo XT2

Magellan

TRX7 TRX7 CS

Road

Tech Zumo 590 Tech Zumo 660 Tech Zumo 665

TomTom

Rider 2 Urban Rider

Trail

Tech Voyager Pro
$10.99

Overview

The RAM-B-347U base consists of a B size 1" diameter rubber ball connected to a 2" x 1.7" square base. The base has four pre-drilled holes at each corner, using the universal AMPS hole pattern.

Features

  • 2" x 1.7" square ball base features industry-standard AMPS hole pattern with four pre-drilled holes at each corner
  • 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

hole pattern:

4-Hole AMPS: 1.181" x 1.496"

plate size:

2" X 1.7"

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:

0.13 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.

QUESTIONS & ANSWERS

Have a Question?

Ask a Question
  • Do I need to use the plastic shim that is provided while installing this part?

    No, the plastic shim is just there in case your handlebar is too narrow for the U-Bolt without it. If the U-Bolt will fit without the shim there is no reason to use that part.

  • What size screws are needed for the holes on this ball plate?

    The most common screw sizes are #8, #10, M4 and M5 screws. However, if you are pairing this with any RAM® Holder, the holder will come with the necessary hardware to connect to your mount.

RAM® Ball Adapter with AMPS Plate - B Size
$10.99

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.

Add-on & Accessories

B Size Double Socket Arms
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Accessories for AMPS Pattern Base Components
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RAM® NFC Extender with Dashboard Mount RAM-B-101-225B-NFCU $135.99
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