RAM Ball Adapter with AMPS Plate – B Size

Looking for a simple, rock-solid way to mount your gear? The RAM® Ball Adapter with AMPS Plate – B Size is one of the most versatile pieces in the RAM Mounts ecosystem. With its standard 1″ rubber ball and AMPS hole pattern, it’s ready to connect to a wide range of mounts, cradles, and accessories—making it a favorite for GPS units, small electronics, and custom mounting setups.

Key Features

• Standard B Size 1″ Ball – Works seamlessly with RAM® double socket arms for near-infinite adjustability and vibration resistance.

• AMPS Hole Pattern – Four pre-drilled holes (1.181″ x 1.496″ spacing) make it compatible with countless industry-standard device cradles and adapters.

• Durable Construction – Built from powder-coated, marine-grade aluminum for long-lasting strength in any environment.

• Compact & Lightweight – Weighs just 0.13 lbs but supports up to 2 lbs in standard use.

• Easy Installation – Mounts quickly with four screws and integrates into existing RAM® systems without hassle.

Specifications

• Material: Powder-coated, marine-grade aluminum

• Ball Size: B Size, 1″ diameter

• Base Dimensions: 2″ x 1.7″ square plate

• Hole Pattern: AMPS, 4 holes (1.181″ x 1.496″ spacing)

• Weight Capacity: 2 lbs (standard use), 1 lb (heavy-duty use)

• Weight: 0.13 lbs

Why Choose the RAM mounts?

The RAM ball mount isn’t just a simple plate—it’s the foundation for countless mounting possibilities. Whether you’re securing a Garmin zumo, a TomTom GPS, or any device that follows the AMPS standard, this adapter gives you the flexibility and durability you expect from RAM Mounts. With its ball-and-socket adjustability, you’ll get the perfect viewing angle every time—without worrying about slippage or vibration.

Common Uses

• Mounting GPS units, tablets, or radios in vehicles

• Creating custom dash, console, or wall mounts

• Replacing or upgrading existing RAM® bases

• Building out modular mounting setups for off-road, marine, or industrial applications

In the Box

• (1) RAM® B Size Ball Adapter with AMPS Plate (RAM-B-347U)

Highlights

• RAM Mounts B Size Ball Adapter – universal 1″ ball connection

• AMPS Plate Mounting Base – fits industry-standard 4-hole AMPS pattern

• Durable Aluminum Construction – marine-grade, powder-coated finish

• Compatible with GPS & Electronic Device Mounts – Garmin, TomTom, and more

Build Your Mounting System

Pair the RAM-B-347U with a RAM® double socket arm and your choice of device cradle or holder to create a custom solution that’s strong, adjustable, and built to last.