RAM® 12" Flex Arm with Ball Base

Part #: RAM-B-141B-1290
UPC: 793442114151
Ball Size: B
Price: $83.49

Specifications

hole pattern	3-Hole 120-Degree: 1.812" Diameter
ball size	B Size (1")
weight capacity	Standard Use: 2 lbs Heavy-Duty Use: 1 lb
materials	Marine-grade aluminum
packaging type	Poly Bag
Weight	1.5 lb

Kit Components

RAM-B-232-90U RAM® 90-Degree 1/4" NPT Threaded Hole with Round Base
RAM-PF-585-12 RAM® 12" Long 1/4" NPSM Male Threaded Flexible Pipe
RAM-B-218-1U RAM® 1/4" NPT Female Threaded Hole with Ball

RAM® 12" Flex Arm with Ball Base

Part#: RAM-B-141B-1290

UPC: 793442114151

$83.49

hole pattern:

3-Hole 120-Degree: 1.812" Diameter

ball size:

B Size (1")

weight capacity:

Standard Use: 2 lbs
Heavy-Duty Use: 1 lb

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

1.5 lb

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

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Documents

Knowledge Base: Ball Sizes

QUESTIONS & ANSWERS

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Can this be used with a RAM-HOL-TABL28U? Also, will it hold a position relatively well while an off-road vehicle bounces over bumps?

Technically the parts will connect to each other if you also pair it with the socket arm and ball adapter RAM-B-103U, however this would not be recommended for any heavy duty/off-road environments. If you are looking for a roughly 12" extension, we would recommend these parts to build out a complete kit:

Holder: RAM-HOL-TABL28U
Arm: RAM-103U-D
Base: Any base shown in this link

The arm is just over 9" long, and with the other components it should put you really close to 12". For the Base option it will depend what exact surface you're looking to mount against, whether it be drill down or rail etc, but anything there will be compatible with other parts to complete the setup and should be reliable enough for any heavy duty off-road use.

RAM® 12" Flex Arm with Ball Base

$83.49

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size	Ball Diameter	Max Load*	Best For
A	0.56" (14.3 mm)	0.5 lb	Action cameras and other ultra-light devices
B — this product	1" (25.4 mm)	2 lbs	Phones, GPS units, and small tablets — the most common size
C	1.5" (38.1 mm)	4 lbs	Large tablets, fish finders, and rougher rides
D	2.25" (57.2 mm)	6 lbs	Rugged tablets, laptops, and heavy equipment
E	3.38" (85.9 mm)	15 lbs	Large displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.