RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – product photo
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – alternative view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – another angle
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – additional view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – further view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – product photo
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – alternative view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – another angle
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – additional view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – further view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – product photo
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – alternative view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – another angle
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – additional view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – further view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – product photo
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – alternative view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – another angle
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – additional view
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – further view

RAM Mounts Handlebar U-Bolt Base for 12.7–31.8 mm Rails, B-Size (RAM-B-231ZU)

83,00 zł +VAT
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  • Available: Out Of Stock
  • Vendor: RAM MOUNT
  • Type: For Mobile Terminals
  • Barcode: RAM-B-231ZU
RAM Mounts B-size handlebar U-bolt base for 12.7–31.8 mm rails (RAM-B-231ZU) – product photo
RAM MOUNT
RAM Mounts Handlebar U-Bolt Base for 12.7–31.8 mm Rails, B-Size (RAM-B-231ZU)
83,00 zł +VAT

RAM Mounts Handlebar U-Bolt Base (RAM-B-231ZU) is the classic way to fit a RAM mount to motorcycle and bicycle handlebars, rails and tubes from 12.7 to 31.8 mm (0.5"–1.25") in diameter. Two zinc-coated 1/4"-20 U-bolts cover the full range, black rubber caps finish the exposed ends, and the base sits at a right angle to the rail. The 1" B-size ball connects to any B-size double socket arm and holder.

📦 What's in the box – RAM-B-231ZU

  • U-bolt rail base with ball – B-size 1" ball, for rails Ø 12.7–31.8 mm
  • U-bolt for 12.7–25.4 mm rails – 1/4"-20, zinc-coated
  • U-bolt for 25.4–31.8 mm rails – 1/4"-20, zinc-coated
  • 2 nyloc nuts – 1/4"-20
  • 2 rubber caps – cover the U-bolt ends
  • U-bolt spacer – narrows the rail to a minimum of 12.7 mm

💡 To get started, you might also consider a B-size double socket arm and a device holder such as the X-Grip phone holder.

View accessories →

Key Features

  • Wide clamp range – two U-bolts and a spacer fit rails Ø 12.7–31.8 mm (0.5"–1.25")
  • Clean finish – black rubber caps cover the exposed U-bolt ends
  • B-size 1" ball – connects to any RAM B-size double socket arm for near-infinite adjustment
  • Load rating – up to 2 lb (0.9 kg) in standard use and 1 lb (0.45 kg) in heavy-duty use; ideal for phones, GPS units, scanners and small tablets
  • Built for harsh conditions – powder-coated marine-grade aluminium, backed by RAM's lifetime warranty

Compatibility

  • Motorcycle and bicycle handlebars, rails and tubes Ø 12.7–31.8 mm
  • All RAM B-size (1") double socket arms and ball components

Technical Specifications

Part Number RAM-B-231ZU
Product Type Rail / clamp ball base, B-size
Connection B-size (1" / 25.4 mm) ball
Clamp Range Ø 12.7–31.8 mm (0.5"–1.25")
Load Capacity 2 lb (0.9 kg) standard use; 1 lb (0.45 kg) heavy-duty use
Material Powder-coated marine-grade aluminium; zinc-coated U-bolts
Weight 0.12 kg (0.27 lb)
Warranty Lifetime warranty (RAM Mounts)
In the Box U-bolt rail base with ball, u-bolt for 12.7–25.4 mm rails, u-bolt for 25.4–31.8 mm rails, 2 nyloc nuts, 2 rubber caps, u-bolt spacer

You will find matching cradles, holders and more RAM mounting parts in our Mobile Terminal Accessories collection. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.

Accessories

ProductPrice
RAM Mounts Double Socket Arm, B-Size, Medium 95 mm (RAM-B-201U) RAM Mounts Double Socket Arm, B-Size, Medium 95 mmRAM-B-201U90,00 zł+VATIn Stock
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RAM Mounts X-Grip Universal Phone Holder with B-Size Ball (RAM-HOL-UN7BU) RAM Mounts X-Grip Universal Phone Holder with B-Size BallRAM-HOL-UN7BU169,00 zł+VATOut of Stock View
RAM Mounts Quick-Grip Pro Phone Holder with B-Size Ball (RAM-HOL-PD5BU) RAM Mounts Quick-Grip Pro Phone Holder with B-Size BallRAM-HOL-PD5BU426,00 zł+VATOut of Stock View
RAM Mounts Torque Medium Rail Base for 19.1–25.4 mm Rails, B-Size (RAM-B-408-75-1U) RAM Mounts Torque Medium Rail Base for 19.1–25.4 mm Rails, B-SizeRAM-B-408-75-1U116,00 zł+VATOut of Stock View
RAM Mounts Tough-Claw Small Clamp Base with Ball for 15.9–29 mm Rails, B-Size (RAP-B-400U) RAM Mounts Tough-Claw Small Clamp Base with Ball for 15.9–29 mm Rails, B-SizeRAP-B-400U179,00 zł+VATOut of Stock View
RAM Mounts Handlebar U-Bolt Double Ball Mount with Round AMPS Plate, B-Size, Medium Arm (RAM-B-149Z-202U) RAM Mounts Handlebar U-Bolt Double Ball Mount with Round AMPS Plate, B-Size, Medium ArmRAM-B-149Z-202U219,00 zł+VATOut of Stock View

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