Description
The RAM® Double U-Bolt Rail Base creates a C Size 1.5" Ball mounting point on compatible round rails measuring 1.25" to 1.5" in diameter. Its dual U-bolt design provides a secure clamp-style installation without requiring holes to be drilled into the rail.
The integrated ball connects to compatible RAM C Size double socket arms, while the powder-coated marine-grade aluminum base is built for demanding mounting applications.
Key Features
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RAM C Size 1.5" ball connection
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Fits round rails from 1.25" to 1.5" in diameter
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Dual U-bolt design provides two clamping points
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Includes zinc-coated U-bolts, Nylock nuts, and rubber caps
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Rubber caps cover the exposed U-bolt ends
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Compatible with RAM C Size 1.5" double socket arms
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Powder-coated marine-grade aluminum construction
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Supports up to 4 lbs during standard use and 3 lbs during heavy-duty use
Use Cases & Compatibility
This rail base is designed for compatible round tubing and rails measuring 1.25" to 1.5" in diameter. It is compatible with a variety of RAM C Size 1.5" socket arms and mounting components.
Specifications
Ball Size: C Size 1.5" Ball
Clamp Range: 1.25"–1.5" diameter
Material: Powder-coated marine-grade aluminum
Weight Capacity: Standard Use: 4 lbs; Heavy-Duty Use: 3 lbs
Product Weight: 0.55 lb
What’s Included
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(2) 1/4"-20 U-bolts for 1.25"–1.5" rails
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(4) 1/4"-20 Nylock nuts
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(4) rubber caps
Brand & Warranty
Brand: RAM Mounts
Manufacturer Part Number: RAM-235-1U
Warranty: Manufacturer’s lifetime warranty.
Gadget Mounts is an Authorized RAM Mounts Dealer.

