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® Drill-Down Double Ball Mount with Hardware for Garmin GPSMAP Series

SKU Copied
SKU: RAM-B-139-G4U
UPC Copied
UPC: 793442916991

RAM® Drill-Down Double Ball Mount with Hardware for Garmin GPSMAP Series
Copy SKU
SKU: RAM-B-139-G4U
Copy UPC
| UPC: 793442916991

B SIZE
MEDIUM ARM
Size Guide
Simply choose your preferred mounting location and the possibilities become endless with the Garmin GPSMAP Flat Surface Mount. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your Garmin GPSMAP is safe, secure, and within easy reach. RAMs patented design also dampens shock and vibration helping to extend the life of your mobile device.

Information

Compatible Devices

Information

Product Weight
0.26 kg (0.58 lbs)
Hardware Included
(3) #8-32 x 12.70 cm (5")/20.32 cm (8") Machine Screws(3) #8-32 Nylock Nuts
Product Dimensions
Overall Height: 12.70cm (5")
Socket To Socket Length
7.62cm (3")
Hole Pattern
Round Plate: 4-Hole AMPS: 3.00 cm (1.181") X 3.80 cm (1.496") & 3-Hole 120-Degree: 4.60cm (1.812") DiameterRectangular Plate: 4-Hole AMPS: 3.00 cm (1.181") X 3.80 cm (1.496")
Plate Size
6.35cm (2.5") Diameter
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

Compatible Devices

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Components

RAM Mounts
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RAM-B-201U
RAM® Double Socket Arm - B Size Medium
RAM Mounts
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RAM-B-202U
RAM® Round Plate with Ball - B Size
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RAM-B-347-G4U
RAM® Ball Adapter with AMPS Plate for Garmin GPSMAP 620 & 640


Complete Your Solution

Locking Knobs for B Size Socket Arms

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

Accessories for AMPS Pattern Base Components

RAM Mounts
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RAM-202-225B-2U
RAM® Backing Plate Adapter
RAM Mounts
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RAM-HOL-ROTO1U
RAM® Roto-View™ Adapter Plate
RAM Mounts
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RAP-403U
RAM® Cable Manager with AMPS Hole Pattern for Electronic Mounts

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

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