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® EZ-Roll'r Drill-Down Mount with Plate for Garmin nuvi 2500 Series

SKU Copied
SKU: RAM-B-138-GA57-225BU
UPC Copied
UPC: 793442950520
Ram B 138 Ga57 225bu1jpg
Ram B 138 Ga57 225bu2jpg

RAM® EZ-Roll'r Drill-Down Mount with Plate for Garmin nuvi 2500 Series
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SKU: RAM-B-138-GA57-225BU
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| UPC: 793442950520

Overview
The RAM-B-138-GA57-225BU consists of a double socket arm, 6.35cm (2.5") diameter round base with the universal AMPS hole pattern, diamond adapter base, custom high strength composite cradle and steel backer plate for the listed compatible Garmin nuvi series. Designed into the mount is a 2.54cm (1") diameter patented rubber ball and socket system with adjustment points at the base and cradle. With a twist of the arm knob, you can move the flat surface nuvi mount to your optimum viewing position.

Information

Information

Hardware Included

Assembly Hardware
(1) 7.62 cm (3") X 7.62 cm (3") Steel Backing Plate
(4) #10-24 x 2.54cm (1") Thread Locking Screws
(4) #10-24 Nylock Nuts

Socket To Socket Length

7.62cm (3")

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

B Size (1")

Weight Capacity

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

Materials

Steel
Marine-grade aluminum
High strength composite

Packaging Type

Poly Bag

Weight

0.46 kg (1.02 lbs)

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Components

Ram 202 225bu1jpg
RAM Mounts
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RAM-202-225BU
RAM® Backing Plate Adapter
02 10 231421ram B 138u1jpg
RAM Mounts
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RAM-B-138U
RAM® Double Ball Drill-Down Mount with Diamond Plate - Medium
01 29 230734ram Hol Ga57u1jpg
RAM Mounts
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RAM-HOL-GA57U
RAM® EZ-Roll'r Cradle for Garmin nuvi 2557LMT, 2598LMTHD + More


Complete Your Solution

Locking Knobs for B Size Socket Arms

01 29 232210rap S Knob3 7u1jpg
RAM Mounts
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RAP-S-KNOB3-7U
RAM® Pin-Lock Security Knob with 7-Pin Pattern for B Size Socket Arms
01 29 232210rap S Knob3 6u1jpg
RAM Mounts
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RAP-S-KNOB3-6U
RAM® Pin-Lock Security Knob with 6-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

01 29 230755ram Hol Roto1u1jpg
RAM Mounts
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RAM-HOL-ROTO1U
RAM® Roto-View Adapter Plate
01 29 231142rap 326fu1jpg
RAM Mounts
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RAP-326FU
RAM® EZY-Mount™ Quick Release Female Adapter
01 29 231142rap 326u1jpg
RAM Mounts
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RAP-326U
RAM® EZY-Mount Quick Release Adapter Kit
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