RAM® Handlebar U-Bolt Base for Rails 0.5" to 1.25" in Diameter - B Size Patented

U-Bolt Mount, with Zinc Plated Steel U-Bolt, For mounting a 1 inch "B" size ball to a 3/4" to 1" Diameter Rail
The Powder Coated Marine Grade Aluminum Rail Base has a 1.0 inch diameter Rubber Ball designed to sit at right angles to the rail. The Stainless Steel U-Bolt and nuts included will fit a circular post or handlebar with diameter from 3/4 to 1 inches.  The U-Bolt is not rust proof.  If it will be exposed to the elements I recommend the RAM-B-231U.  Weight: 2.8 oz (79 g)

Ideal for motorcycle handlebars, the RAM-B-231ZU consists of a 1" B size rubber ball attached to a zinc-coated metal U-bolt base. Designed to sit at right angles to the mounting rail, the U-bolt base accommodates rails from .5" to 1.25" in diameter. Included are black cover caps to be placed over the exposed ends of the U-bolt as well as a composite adapter that can narrow the rail to a minimum width of .5".

FEATURES:

• Zinc-coated metal U-bolt base with 1" rubber ball is designed to sit at right angles to mounting rail; includes black cover caps for exposed ends of the U-bolt
• Compatible with any B size RAM® Mounts component; ball and socket technology allows for near-infinite adjustabilityMade of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
• Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
• Backed by a lifetime warranty

SPECS:

Hardware Included: 
(1) 1/4"-20 U-Bolt for .5" - 1" Rails
(1) 1/4"-20 U-Bolt for 1" - 1.25" Rails
(2) 1/4"-20 Nylock Nuts
(2) Rubber Caps
(1) U-Bolt Spacer

Clamp
.5" - 1.25" diameter

Ball Size:
B Size (1")

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

Materials: 
Marine-grade aluminum

Weight:
0.27 lb

RESOURCES:
Instructions:
RAM® U-Bolt Base Assembly Guide

Q&A
Q: Do I need to use the plastic shim when installing this base?
A: No, the shim is just there in case your handlebar is too narrow for the U-Bolt to get a good grip. If the U-Bolt fits well without the shim there is no reason to use it.