FANAUE Handlebar Clamp U-bolt Mount for 0.85"–1.14" Rails — B‑Size 1" Rubber‑Coated Ball, Anodized Aluminium

FANAUE's Handlebar Clamp U-bolt Base is an anodized aluminum mount with a rubber-coated B-size 1" ball that secures RAM-compatible double-socket arms and motorcycle phone mounts to 0.85"–1.14" handlebars.

This compact clamp converts a round rail into a sturdy mounting point for navigation, cameras, or accessories. CNC-machined from aluminum alloy and finished with Class III hard anodizing, it resists corrosion and everyday wear. The rubber-coated B-size ball provides non-slip contact for RAM-style double-socket arms while the U-bolt design slips over most tubular handlebars for a fast, stable install.

How does the FANAUE clamp attach to my handlebar?

Installation is straightforward: position the U-bolt over the tube, fit the machined base and fasten the nuts. No special tools beyond common wrenches are required, and the design holds tight under vibration and road conditions.

• U-bolt fits 0.85"–1.14" diameter rails (approx. 22–29 mm)
• Includes machined aluminum base with predrilled holes for the U-bolt
• Standard hex nuts secure the clamp firmly
• Quick install/removal for multi-bike use

Will it work with my RAM Mounts or phone holder?

The clamp features a B-size 1" ball head that matches RAM-style double-socket arms and many motorcycle phone mounts. Because it uses the common B-size interface, it pairs with a wide range of arms, cradle adapters, and accessory mounts designed for that standard.

• B-size 1" ball head is compatible with RAM B-type double-socket arms
• Connects to RAM-style phone cradles, camera adapters, and accessory arms
• Rubber coating improves grip and reduces slippage under load
• 360° rotation at the ball for flexible positioning

How durable and weather-resistant is the mount?

This mount is built for outdoor use: aluminum alloy construction plus a Class III hard anodized finish resists corrosion, abrasion, and fading. The rubber-coated ball head helps prevent wear where the arm interfaces with the base, extending service life in wet or dusty conditions.

• CNC aluminum alloy body for high strength-to-weight ratio
• Class III hard anodized surface for corrosion and scratch resistance
• Rubber-coated ball reduces metal-on-metal wear and vibration
• Designed for motorcycle and outdoor riding environments

How adjustable is the viewing angle once installed?

The 1" B-size ball allows a full range of motion when used with a double-socket arm, enabling precise angle and orientation adjustments. Tightening the arm's clamping knobs locks the chosen position, so your device stays put even on bumpy roads.

• 360° ball rotation for landscape or portrait orientation
• Works with single or double-socket arms for extended reach
• Fine-tune tilt and swivel before locking the arm in place
• Stable hold under vibration once the arm is tightened

Who is this for? Riders, e-bike commuters, and motorcyclists who need a reliable, compact mounting base to attach RAM-style arms or phone holders will find this clamp useful. It's also a good option for users who swap mounts between bikes, retrofit aftermarket accessories, or require a corrosion-resistant base for long-term outdoor use. Backed by a lifetime warranty and supported by responsive customer service, the FANAUE U-bolt handlebar clamp is aimed at anyone wanting a durable, easy-to-install solution for mounting navigation, camera, or accessory arms on round rails.