RAM® Add-A-Ball™ Accessory Base for the Composite Yoke Clamp Base

Name: RAM® Add-A-Ball™ Accessory Base for the Composite Yoke Clamp Base
Brand: RAM Mounts
SKU: RAP-B-121BBU
Price: 6.92 USD
Availability: InStock
Rating: 4.8 (5 reviews)

RAM® Add-A-Ball™ Accessory Base for the Composite Yoke Clamp Base - Main image

RAM® Add-A-Ball™ Accessory Base for the Composite Yoke Clamp Base - View 2

$6.92 ~~$10.49~~ In stock

Category: Components

The RAP-B-121BBU connects to RAP-B-121U mounts; it is used as an extra ball to mount an additional device to your current mount.

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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 (4.8 / 5 · 5 reviews)

Matthew ★★★★★ Oct 23, 2026

I needed a second mount for my tablet next to my phone setup, and this extra ball base solved it perfectly. The locking mechanism feels solid once it's connected to the yoke clamp. Makes adding another device a total breeze.

Sophia F. ★★★★★ Oct 22, 2026

This little ball base clicked right into my existing yoke clamp setup and held my second device firmly. It took less than a minute to install and hasn't budged on rough roads. Great solution for adding a phone or GPS without buying a whole new mount.

Isabella ★★★★★ Oct 21, 2026

Was a bit skeptical about adding another device to my yoke mount, but this ball base snapped right into place without any wobble. Now I can run my phone and GPS side by side with no interference.