RAM Mounts Google Search

RAM® Square Post Clamp Base for Posts up to 2.5" Wide - B Size

RAM® Square Post Clamp Base for Posts up to 2.5" Wide - B Size - Main image
$28.66 $45.49 In stock

Category: Components

The RAM-B-247U-25 is a square post clamp base designed for posts up to 2.5" wide. It consists of a 2.5" clamp base with a 1" ball, part of the RAM Mounts B Size 1" ball system.

  • Square post clamp base for posts up to 2.5" wide
  • Includes a 1" ball (B Size)
  • B Size 1" ball system holds up to 2 lbs
  • Part number: RAM-B-247U-25
  • Listed under Components and Square Post Clamp
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.4 / 5 · 5 reviews)

Edward ★★★★★

Bolted this onto a 2.5" square post for my tablet holder and the 1" ball hasn't budged a millimeter, even on bumpy gravel roads. The clamp opens wide enough that I didn't have to shim anything, which was my main worry. Exactly the sturdy base I needed for the B size system.

Jacob Z. ★★★★★

I was a bit worried about the fit on my 2-inch post, but the clamp adjusts easily and the 1-inch ball gives me plenty of positioning options.

William L. ★★★★★

Finally, a mount that actually grips my square tube rack—the clamp opens wide enough for a 2.5-inch post without slipping. I’ve been using it with a tablet holder for a week and the 1" ball joint hasn’t budged, even on bumpy roads.