RAM-B-231U - U-Bolt Rail Base - B Series (1" Ball) - Stainless

RAM-B-231U – RAM® Stainless U-Bolt Rail Base with 1" Ball

The RAM-B-231U is a stainless-steel U-bolt rail base topped with a 1" RAM B-size rubber ball. It clamps round rails and handlebars from 12.7mm to 25.4mm (0.5" to 1") and gives you a RAM ball to build a mount from. The stainless U-bolt makes it the pick for boats, kayaks and salt-air use.

Key Features

• Stainless-steel U-bolt for corrosion resistance in marine and coastal use
• 1" RAM B-size rubber ball sits at right angles to the rail
• Fits round rails 12.7mm to 25.4mm (0.5" to 1"); composite adapter narrows to 12.7mm (0.5")
• Powder-coated marine-grade aluminium body, RAM lifetime warranty

Works With

The 1" ball connects to any RAM B-size double socket arm or single-socket cradle. For larger bars up to 1.25", see the RAM-B-231-1U. Prefer zinc for road use? See the RAM-B-231ZU.

Dimensions & Specifications

• U-bolt clamping range: 12.7mm to 25.4mm (0.5" to 1")
• Ball size: 1" rubber ball, RAM B-size
• Material: powder-coated marine-grade aluminium with stainless-steel U-bolt
• Load rating: up to 907g (2 lb) standard use; 454g (1 lb) for heavy-duty or high-vibration use

What's Included

• RAM-B-231U stainless U-bolt rail base with 1" ball
• Composite rail adapter and U-bolt end caps

FAQs

Do I need an arm as well?
Usually yes. This is a base only. Add a RAM B-size double socket arm to connect it to your cradle, or fit a single-socket cradle straight onto the ball.

How fast does it ship?
If it's shown in stock here, it ships from our Auckland warehouse, normally within one business day. If it's shown as out of stock, get in touch and we may be able to get it in for you.

Videos

• RAM U-bolt base assembly overview