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RAM® Ball Adapter with 1" NPT Hole - D Size

RAM® Ball Adapter with 1" NPT Hole - D Size - Main image
$58.31 $80.99 In stock

Category: Components

The RAM® Ball Adapter with 1" NPT Hole - D Size is a mounting component from RAM Mounts, designed to connect to a 1" NPT threaded hole. It is part of the D Size ball system, which uses a 2.25" ball and is rated to hold up to 6 lbs.

  • RAM Mounts component: RAM-D-313-DU
  • D Size ball: 2.25" diameter
  • D Size rating: holds up to 6 lbs
  • Features a 1" NPT hole for threaded mounting
  • Ball adapter format for building or extending a mount
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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

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Customer Reviews (4.6 / 5 · 5 reviews)

Julian ★★★★★

This threaded adapter fit perfectly into my existing 1" NPT mount setup, and the D-size ball locks in place with that satisfying RAM Mounts click. The machining feels precise and the ball rotates smoothly even under load.

Matthew W. ★★★★★

I needed a threaded adapter for a custom moto mount, and this ball fits perfectly into the 1" NPT hole—no wobble at all. The machining is very precise, and it handles rough roads without slipping.

Henry C. ★★★★★

The 2.25" ball locks into my cradle with that satisfying click, and the 1" NPT threads cut clean without any wobble. Solid as a rock on the boat.