World-Class Mounting Systems

Size Guide

Ball Sizes
Arm Sizes
X
The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.
B Size
Holds 2 lbs / 0.91 KG
1" Ball
Phones, Action Cameras, Light Duty Tablets
C Size
Holds 4 lbs / 1.81 KG
1.5" Ball
Fishfinders, Heavy Duty Tablets
D Size
Holds 6 lbs / 2.72 KG
2.25" Ball
Monitors, Large Fishfinders
E Size
Holds 15 lbs / 6.8 KG
3.38" Ball
Heavy Monitors
Ball Sizes Short Arm Medium Arm Long Arm
B Size Overall Length 2.42" / 6.1468cm 3.73" / 9.47cm 6.00" / 15.24cm
Socket-to-Socket Length 1.75" / 4.45cm 3.00" / 7.62cm 5.31" / 13.49cm
C Size Overall Length 3.56" / 9.04cm 5.69" / 14.45cm 9.13" / 23.19cm
Socket-to-Socket Length 2.50" / 6.35cm 4.66" / 11.84cm 8.00" / 20.32cm
D Size Overall Length 5.10" / 12.95cm 8.44" / 21.44 12.98" / 32.97
Socket-to-Socket Length 3.60" / 9.14cm 6.88" / 17.48cm 11.41" / 28.98cm
E Size Overall Length 7.31" / 18.57cm 12.63" / 32.08cm N/A
Socket-to-Socket Length 4.98" / 12.65cm 9.88" / 25.10cm N/A

RAM® Double Ball Yoke Clamp Mount with Diamond Plate - Medium

SKU Copied
SKU: RAM-B-121-238U
UPC Copied
UPC: 793442112164
02 10 231421ram B 121 238u1jpg
02 10 231421ram B 121 238u2jpg

RAM® Double Ball Yoke Clamp Mount with Diamond Plate - Medium
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SKU: RAM-B-121-238U
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| UPC: 793442112164

B SIZE
MED ARM
Size Guide
Overview
The RAM-B-121-238U consists of a yoke clamp base, standard length double socket arm and 6.17 cm (2.43") X 3.33 cm (1.31") diamond base. The yoke clamp base will fit rails in diameter from 1.59cm (0.625") to a maximum of 3.18cm (1.25") . The 2.54cm (1") rubber ball is at a right angle to the plane of the mount; when connected to a rail, the ball sits parallel to the rail. The diamond base has two holes 4.86cm (1.912") from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles. The mount is designed with a RAM 2.54cm (1") diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm, allowing for almost infinite adjustment and perfect viewing angles.

Information

Resources

Information

Clamp Range

.1587.50cm (625") - 3.18cm (1.25")

Socket To Socket Length

7.62cm (3")

Hole Pattern

2-Hole AMPS: 4.86cm (1.912")

Plate Size

6.17 cm (2.43") X 3.33 cm (1.31")

Ball Size

B Size (1")

Weight Capacity

Standard Use: 0.91 kg (2 lbs)
Heavy-Duty Use: 0.45 kg (1 lbs)

Materials

Marine-grade aluminum

Packaging Type

Poly Bag

Weight

0.32 kg (0.71 lbs)

Resources

Documents
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Components

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RAM Mounts
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RAM-B-121BU
RAM® Yoke Clamp Base with Ball
01 29 230156ram B 201u1jpg
RAM Mounts
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RAM-B-201U
RAM® Double Socket Arm - B Size Medium
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RAM Mounts
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RAM-B-238U
RAM® Diamond Ball Base - B Size


Complete Your Solution

Locking Knobs for B Size Socket Arms

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RAM Mounts
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RAM-KNOB3LSU
RAM® Key Lock Knob with Steel Insert for B Size Socket Arms
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RAM Mounts
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RAP-S-KNOB3-7U
RAM® Pin-Lock Security Knob with 7-Pin Pattern for B Size Socket Arms
07 19 230753rap S Knob3u1jpg
RAM Mounts
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RAP-S-KNOB3U
RAM® Pin-Lock™ Security Knob for B Size Socket Arms

Diamond Plate Accessories

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RAM Mounts
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RAP-462NPT
RAM® Vibe-Safe™ with NPT Adapter for 2-Hole Holders
01 29 230755ram Hol Roto1u1jpg
RAM Mounts
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RAM-HOL-ROTO1U
RAM® Roto-View Adapter Plate
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RAM Mounts
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RAP-326U
RAM® EZY-Mount™ Quick Release Adapter Kit

RAM® Add-A-Ball Accessory Ball for B Size Socket Arms

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RAM Mounts
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RAM-B-273U
RAM® Add-A-Ball™ Accessory Ball for B Size Socket Arms
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