RAM® Tough-Ball™ Mirror Base for Harley-Davidson Motorcycles

Part#: RAP-B-379-HA1U
UPC: 793442941924

Compatibility
$20.99
RAM® Double Socket Arm - B Size Medium

RAM® Double Socket Arm - B Size Medium

$20.49

Overview

The RAP-B-379-HA1U consists of a 1/4"-20 X 1" thread, connected to a 1" diameter ball, female blind barrel nut and nylon washer.

hardware included:

(1) 1/4"-20 x .87" Barrel Nut
(1) .77" Nylon Washer

ball size:

B Size (1")

weight capacity:

Standard Use: 2 lbs
Heavy-Duty Use: 1 lb

materials:

High strength composite
Stainless steel

packaging type:

Poly Bag

Weight:

0.1 lb

Additional Information:

For bikes equipped with a hydraulic clutch, modification of the included washer may be required for proper installation.

Installation Instructions:
1. Locate fairing mirror holes.
2. Place the nylon washer over the barrel nut. Insert the barrel nut into the hole on the controls.
3. Screw the threaded ball into the barrel nut from the other side of the hole. Tighten with 5/8" and 1/2" wrench.

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

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Powersports Catalog
Knowledge Base: Ball Sizes

QUESTIONS & ANSWERS

Have a Question?

Ask a Question

  • Is this 1/4 x 20 x 1 long available without the barrel nut band washer?

    No we do not have this sold without the barrel nut band washer.

  • Can I still have my mirror mounted if i use this?

    Yes, you can still you a mirror.
RAM® Tough-Ball™ Mirror Base for Harley-Davidson Motorcycles
$20.99

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size — this product 1" ball
  • C Size 1.5" ball
  • D Size 2.25" ball
  • E Size 3.38" ball

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size Ball Diameter Max Load* Best For
A0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B — this product1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C1.5" (38.1 mm)4 lbsLarge tablets, fish finders, and rougher rides
D2.25" (57.2 mm)6 lbsRugged tablets, laptops, and heavy equipment
E3.38" (85.9 mm)15 lbsLarge displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.

Add-on & Accessories

B Size Double Socket Arms
See All
RAM® Double Socket Arm - B Size Medium RAM-B-201U $20.49
RAM® Double Socket Arm - B Size Long RAM-B-201U-C $29.99
RAM® Double Socket Arm - B Size Short RAM-B-201U-A $18.49
RAM® Composite Double Socket Arm - B Size Medium RAP-B-201U $13.99
RAM® Composite Double Socket Arm - B Size Short RAP-B-201U-A $11.49
RAM® 10.5" Double Socket Arms - Long & Medium B Size RAM-B-201-201U-C $65.99
RAM® Composite Double Socket Swivel & Ratchet Arm RAP-B-200-2U $28.99
RAM® Composite Double Socket Swivel Arm RAP-B-200-12U $19.49
RAM® Double Socket Arm with Dual Extension and Ball Adapter - B Size RAM-B-201-201U $55.49
RAM® Pin-Lock™ Double Socket Arm - B Size Medium RAM-B-201-SU $27.49
RAM® Chrome Double Socket Arm - B Size Short RAM-B-201-ACHU $50.99
RAM® Chrome Double Socket Arm - B Size Medium RAM-B-201CHU $65.99
RAM® Double Socket Arm with Key Lock Knob - B Size Medium RAM-B-201LU $61.99
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