RAM Mounts Google Search

RAM® Square Post Clamp Base for Posts up to 2.5" Wide Without Hardware

RAM® Square Post Clamp Base for Posts up to 2.5" Wide Without Hardware - Main image
$14.33 $23.49 In stock

Category: Components

The RAM-247U-25NH is a square post clamp base designed for posts up to 2.5" wide. It features a 1.5" ball and is part of the RAM Mounts C Size 1.5" ball system. Hardware is not included.

  • Clamp base for square posts up to 2.5" wide
  • Includes a 1.5" C Size ball
  • C Size 1.5" ball system holds up to 4 lbs
  • Flat edge clamp design
  • Hardware not included
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 (4.6 / 5 · 5 reviews)

Owen I. ★★★★★

I mounted my GPS to a square tube on the boat and the rubber ball grips it securely without any slipping even in rough water. The 1.5" ball connects perfectly with my existing arm, making it a simple upgrade.

Ryan B. ★★★★★

Needed a sturdy clamp for my square railing, and this base’s 1.5" ball locked in perfectly without any wobble. Just wish it came with the hardware, but that’s easy enough to source locally.

David H. ★★★★★

Finally, a mount that actually fits my heavy-duty square posts without any wobble. The 1.5" ball locks in place securely, and I appreciate that the clamp opens wide enough for a 2.5" post. Just wish they included the hardware, but it was easy enough to find at the local store.

Related Products