RAM Mounts RAM-B-231ZU Handlebar U-Bolt Mount Base with 1" B Size Ball for Rails 0.5" to 1.25"

The RAM Mounts RAM-B-231ZU is a zinc-coated metal U-bolt rail base featuring a 1" B size rubber ball designed to sit at right angles to the mounting rail. Built for motorcycle handlebars, boat rails, ATV bars, and similar round tubing, this base accommodates rails from 0.5" to 1.25" in diameter and serves as the foundation for any B size RAM Mounts component.

The patented RAM ball and socket system delivers near-infinite adjustability, allowing you to position phones, GPS units, cameras, and other devices at the precise angle you need. The powder-coated, marine-grade aluminum construction is engineered to withstand demanding environments including vibration, shock, and moisture exposure.

Key Features:

• Zinc-coated metal U-bolt base with 1" B size rubber ball positioned at right angles to the rail
• Accommodates round rails and handlebars from 0.5" to 1.25" in diameter
• Includes composite rail adapter to narrow rail diameter down to a minimum of 0.5"
• Includes black rubber cover caps for exposed U-bolt ends
• Compatible with all B size RAM Mounts arms, cradles, and accessories
• Powder-coated marine-grade aluminum construction for durability in harsh environments
• Modular design integrates with the full RAM Mounts ecosystem

What's Included:

• (1) Zinc-coated U-bolt base with 1" rubber B size ball
• (2) Black rubber cover caps for U-bolt ends
• (1) Composite rail adapter (narrows rail to 0.5" minimum)
• Mounting hardware

Note: The "U" suffix in the part number (RAM-B-231ZU) indicates the product is packaged in a poly bag. This base requires a compatible RAM B size arm and cradle/holder to complete the mounting system.