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® X-Grip® High-Strength Composite Phone Mount with Drill-Down Base

SKU Copied
SKU: RAP-B-138-UN7U
UPC Copied
UPC: 793442940941
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RAM® X-Grip® High-Strength Composite Phone Mount with Drill-Down Base
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SKU: RAP-B-138-UN7U
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| UPC: 793442940941

B SIZE
MED ARM
Size Guide
Overview
The RAP-B-138-UN7U consists of a 2.5" / 6.35cm diameter round base featuring the universal AMPS hole pattern, medium length composite double socket arm, and the popular spring-loaded RAM® X-Grip® phone holder. The RAM® X-Grip® features an 'X' design that expands and contracts to provide a perfect fit for your device – even if it's in a case. Made of marine-grade, stainless steel components and high-strength composite, this version of the RAM® X-Grip® fits phones ranging from 1.87" / 4.75cm to 3.25" / 8.26cm in width and keeps your device completely functional and accessible. RAM® ball and socket technology allows for near-infinite adjustability to achieve the ideal viewing angle – while also extending the life of your phone by providing shock and vibration damping. For outdoor applications, the RAM® X-Grip® includes a device tether that is recommended for added security and peace of mind.

Features
  • Spring-loaded 'X' design with rubber caps sports great holding power without hiding your phone; includes optional device tether for peace of mind during rugged use
  • Includes drill-down 2.5" / 6.35cm round base and medium length, B size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
  • Made of stainless steel components and high-strength composite for durability and reliability in the most demanding environments
  • Backed by a lifetime warranty

Information

Resources

Compatible Devices

Information

Hardware Included

(1) Optional Tether
(1) Glue Tube for Rubber Caps

Holder Dimensions

Width Range: 1.875" / 2 222.50cm / 4.76cm - 3.25" / 8.26cm
Depth Range: .875" / 2 222.50cm max

Socket To Socket Length

3" / 7.62cm

Hole Pattern

4-Hole AMPS: 1.181" / 3.00cm x 1.496" / 3.80cm

Plate Size

2.5" / 6.35cm Diameter

Ball Size

B Size (1" / 2.54cm)

Weight Capacity

Standard Use: 2 lbs / 0.907kg
Heavy-Duty Use: 1 lb / 0.454kg

Materials

High strength composite
Stainless steel

Packaging Type

Poly Bag

Weight

0.51 lb / 0.231kg

Additional Information
Exposure to vibrations, like those generated by high-powered motorcycle engines, might impact iPhone cameras. Click here to learn more.

Resources

Instructions

Compatible Devices

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Components

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RAM Mounts
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RAM-HOL-UN7BU
RAM® X-Grip® Universal Phone Holder with Ball - B Size
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RAM Mounts
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RAP-B-201U
RAM® Composite Double Socket Arm - B Size Medium


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
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RAM Mounts
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RAP-S-KNOB3U
RAM® Pin-Lock Security Knob for B Size Socket Arms

RAM® X-Grip® Caps

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RAM Mounts
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RAP-UN-CAP-4U
RAM® X-Grip® Rubber Cap 4-Pack Replacement
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RAM Mounts
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RAP-UN-CAP-4-BLUEU
RAM® X-Grip® Blue Rubber Cap 4-Pack
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RAM Mounts
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RAP-UN-CAP-4-REDU
RAM® X-Grip® Red Rubber Cap 4-Pack

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® Tough-Claw™ Trolling Motor Stabilizer - C Size Medium
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