RAM® 9mm Angled Bolt Head Adapter Ball Base

Name: RAM® 9mm Angled Bolt Head Adapter Ball Base
Brand: RAM Mounts
SKU: RAM-B-272U
Price: 12.07 USD
Availability: InStock
Rating: 4.8 (5 reviews)

RAM® 9mm Angled Bolt Head Adapter Ball Base - Main image

RAM® 9mm Angled Bolt Head Adapter Ball Base - View 2

RAM® 9mm Angled Bolt Head Adapter Ball Base - View 3

RAM® 9mm Angled Bolt Head Adapter Ball Base - View 4

$12.07 ~~$17.49~~ In stock

Category: Components

The RAM-B-272U consists of a B size 1" rubber ball and mounting base measuring 1.18" x .75" x .2" with a 9mm hole. This angled bolt head adapter base is often attached to the mirror frame on motorcycles.

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Customer Reviews (4.8 / 5 · 5 reviews)

Elizabeth ★★★★★ Oct 23, 2026

Was a bit skeptical about the fit on my mirror stem, but that 9mm hole lined up perfectly and the rubber ball grips tight. Exactly what I needed for a clean install.

Alexander ★★★★★ Oct 22, 2026

The angled bolt head design made it much easier to tighten on my mirror frame compared to a standard flat base, and the rubber ball holds my phone mount securely even on bumpy roads. I’ve been using it for a week with no loosening at all.

Lily H. ★★★★★ Oct 21, 2026

The 9mm hole on this ball base fit perfectly into my motorcycle's mirror bracket without any extra drilling. The rubber ball is firm enough to hold my device steady even on bumpy roads, and the angled head made positioning effortless.