RAM® Spline Post Ball Adapter - C Size

Part#: RAP-354-419U
UPC: 793442954467
$22.49

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size 1" ball
  • C Size — this product 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
B1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C — this product1.5" (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.

Overview

Convert any RAM post/spline base into a ball base on your boat or kayak with this 1.5" ball with spline post. With this adapter you can use your existing rod holder base to support a wide variety of ball and socket components to hold your fish finder or other electronic devices. This ball will also connect to the RAM ROD® Revolution Ratchet arm which adds ball and socket adjustability to your fishing rod holder. With the post and spline function you can easily remove or transfer your ball and socket mount when not in use.

hardware included:

Assembly Hardware

t bolt dimensions:

.48" x .95"

wedge dimensions:

Fits tube diameters 1.5" - 1.875"

ball size:

C Size (1.5")

weight capacity:

Standard Use: 4 lbs
Heavy-Duty Use: 3 lbs

materials:

High strength composite

packaging type:

Poly Bag

Weight:

0.2 lb

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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QUESTIONS & ANSWERS

Have a Question?

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  • it appears that this is a 2 piece design and can be expanded between the ball section and the spline section. Please confirm.

    Yes, if you were to unscrew the PAN HEAD PHILLIPS MACHINE SCREW these parts will come apart.

  • will this fit in a Scotty Spline Post Base?

    No, this adaptor is made specifically for use with RAM Spline Post Bases.

RAM® Spline Post Ball Adapter - C Size
$22.49

Add-on & Accessories

RAM® Post/Spline Bases
See All
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