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 Mount with Diamond Plate Adapter - Medium

SKU Copied
SKU: RAM-138U
UPC Copied
UPC: 793442910258
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RAM® Double Ball Mount with Diamond Plate Adapter - Medium
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SKU: RAM-138U
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| UPC: 793442910258

Overview
The RAM-138U consists of a 6.35cm (2.5") diameter round base that contains the universal AMPs hole pattern, double socket arm and diamond base adapter. The mount is designed with a 3.81cm (1.5") diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. The hole pattern found on the diamond base adapter will connect to most RAM cradles. The included RAM’s patented design dampens shock and vibration, helping to extend the life of your device.

Information

Information

Product Dimensions

Overall Height: 18.67cm (7.35")

Socket To Socket Length

11.84cm (4.66")

Hole Pattern

4-Hole AMPS: 3.00 cm (1.181") X 3.80 cm (1.496")
3-Hole 120-Degree: 4.60cm (1.812") Diameter

Ball Size

C Size ( 3.81cm (1.5") )

Weight Capacity

Standard Use: 1.81 kg (4 lbs)
Heavy-Duty Use: 1.36 kg (3 lbs)

Materials

Marine-grade aluminum

Packaging Type

Poly Bag

Weight

0.51 kg (1.12 lbs)

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Components

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RAM Mounts
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RAM-201U
RAM® Double Socket Arm - C Size Medium
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RAM Mounts
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RAM-202U
RAM® Round Plate with Ball - C Size
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RAM Mounts
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RAM-238U
RAM® Diamond Ball Base - C Size


Complete Your Solution

Locking Knobs for C Size Socket Arms

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RAM Mounts
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RAM-KNOB5LU
RAM® Key Lock Knob with Brass Insert for C Size Socket Arms
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RAM Mounts
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RAP-S-KNOB5U
RAM® Pin-Lock Security Knob for C Size Socket Arms
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RAM Mounts
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RAP-S-KNOB5-7U
RAM® Pin-Lock 7-Pin Security Knob for C Size and Swing Arms

Accessories for AMPS Pattern Base Components

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RAM Mounts
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RAM-202-225B-2U
RAM® Backing Plate Adapter
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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-400-202U
RAM® Trolling Motor Stabilizer - Tough-Claw .625" - 1.14" Medium Arm
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