Description
The RAM-B-149Z-QU1U is a RAM B Size handlebar mounting component that combines a zinc-coated U-bolt base with a medium double socket arm. It provides a secure mounting point on round rails and handlebars for connecting compatible RAM holders, cradles, and adapters with a B Size 1" ball.
This setup is commonly used on motorcycles, ATVs, bicycles, carts, and other rail-based applications where a durable, adjustable RAM mounting solution is needed.
Key Features
- Includes zinc-coated U-bolt base and medium RAM double socket arm
- Fits round rails and handlebars from 0.5" to 1.25" in diameter
- B Size 1" ball system works with compatible RAM B Size holders and cradles
- Medium double socket arm provides 3" socket-to-socket length
- Ball-and-socket design allows a wide range of adjustability
- Includes U-bolts, nylock nuts, rubber caps, and U-bolt spacer
- Weight capacity: 2 lbs standard use; 1 lb heavy-duty use
Use Cases & Compatibility
The RAM-B-149Z-QU1U is commonly used as a handlebar or rail mounting base for phones, GPS units, small tablets, action cameras, and other lightweight devices when paired with a compatible RAM adapter plate or cradle.
This component is part of the RAM B Size 1" ball-and-socket system. The included U-bolt base clamps to round rails from 0.5" to 1.25" in diameter, while the medium double socket arm connects the base to a RAM-compatible holder with a B Size 1" ball.
Specifications
Ball Size: B Size 1" Rubber Ball
Material: Marine-Grade Aluminum
Color: Black
Clamp Range: 0.5" to 1.25" diameter
Socket-to-Socket Length: 3"
Weight Capacity: Standard Use: 2 lbs; Heavy-Duty Use: 1 lb
Included Hardware: 1/4"-20 U-bolts, 1/4"-20 nylock nuts, rubber caps, and U-bolt spacer
Product Weight: 0.56 lb
Additional Details: Designed for round rails and handlebars. Requires a compatible RAM holder or cradle to complete the mounting setup.
What’s Included
- Zinc-coated U-bolt base with B Size 1" ball
- Medium RAM B Size double socket arm
- One 1/4"-20 U-bolt for 0.5" to 1" rails
- One 1/4"-20 U-bolt for 1" to 1.25" rails
- Two 1/4"-20 nylock nuts
- Two rubber caps
- One U-bolt spacer
Brand & Warranty
Brand: RAM Mounts
Manufacturer Part Number: RAM-B-149Z-QU1U
Warranty: Manufacturer's lifetime warranty
Gadget Mounts is an Authorized RAM Mounts Dealer.

