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


- 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 adjustability

- Made of powder-coated, marine-grade aluminium for durability and reliability in the most demanding environments

- Backed by a lifetime warranty


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".


(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


.5" - 1.25" diameter


B Size (1")


Standard Use: 900g

Heavy-Duty Use: 450g


Marine-grade aluminium


Poly Bag



Links below will open in a new window. Please note some links from the resources tab may take you to the RAM USA website and feature different part codes. If you require any assistance finding anything please contact us:

RAM® U-Bolt Base Assembly Guide

Drawing File - U-Bolt Ball Base

On Road Catalog

Search Filter
Ball and Socket Size B Size 1" (Holds 2 lbs)
Mount Function Handlebar/Rail
Solution Type Components
Vehicle Motorcycle,Bicycle

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

  • Product Code: RAM-B-231Z
  • Availability: In Stock
  • £19.99

  • Ex VAT: £16.66

Tags: motorcycle, 1", ball, 1, inch, bicycle, bike, handle, bar, HandleBar, part, rail, u-bolt, base, bolt, davidson, clamps, harley, ubolt, zinc, trail, tech, trailtech, voyager, pro, voyagerpro