RAM® Large Marine Electronics Ball

Name: RAM® Large Marine Electronics Ball
Brand: RAM Mounts
SKU: RAM-137BU
Price: 33.79 USD
Availability: InStock
Rating: 5.0 (5 reviews)

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$33.79 ~~$51.99~~ In stock

Category: Components

The RAM-137BU, universal mounting plate, consists of a 1.5" diameter rubber ball, connected at right angles to a flat 3" x 11" rectangular plate. The plate contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more.

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

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

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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 (5.0 / 5 · 5 reviews)

George G. ★★★★★ Oct 23, 2026

The rubber ball pivots smoothly and locks tight—perfect for my fish finder mount. Drilling the pre-drilled holes was straightforward, and the plate feels solid enough for offshore use.

Daniel ★★★★★ Oct 22, 2026

The 3x11 plate is plenty wide for my setup, and the 1.5" ball locks tight with no wobble after a week of rough water. Pre-drilled holes lined up perfectly with my existing mount, so install took under ten minutes.

Henry D. ★★★★★ Oct 21, 2026

That rubber ball gives you so many positioning options, I was able to fine-tune the screen angle perfectly on my boat's dash. The 1.5" ball locks solidly in the mount, even with the engine vibrating, and the flat plate has been rock-stable since day one.