2018-12 Yamaha FX Waverunner Cup Holder Mount for RAM 3-11/16” OD ball base PWC Jet Ski

This cup holder mount is for the 2012 thru 2018 Yamaha FX Waverunner models and fits a 3-11/16″ OD aluminum RAM ball base.

Fasteners will be provided for holding the cup holder mount to the dash and also for holding the RAM ball to the adapter plate. All fastener components are stainless steel.

Contents of this kit include;
(1) black cup holder mounting plate and fasteners (RAM ball not included)

For holding the adapter plate to the dash, you will be provided with;
(6) 1/4-20 black oxide stainless steel button head hex socket cap screws
(6) stainless steel washers for under the dash
(6) stainless steel nylon locking nuts
(4) black oxide stainless steel shim washers

For holding the RAM ball base to the cup holder mount, you will receive;
(4) 5/16-18 stainless steel flat head screws
(4) stainless steel washers for the underside
(4) stainless steel nylon locking nuts

Click here for more information

The mounting plate is made out of heavy duty 3/4″ thick black marine grade UV stabilized plastic and has a black matte textured finish. It has a round pilot machined on the bottom side. The pilot engages the dash cup holder hole and is meant to make installation easy by centering the adapter plate about the Waverunner factory hole. There is an offset 1-1/8″ diameter hole machined through the mounting plate to allow cables to feed up through from the bottom. There is also a shallow recessed round pocket centered in the top face of the mounting plate. The recessed pocket is sized slightly smaller than 3-3/4” diameter to accommodate a round 3-11/16” outside diameter large RAM aluminum ball base having a 3 hole 120 degree / 2 hole 180 degree bolt pattern (RAM-D-202U D sized 2-1/4″ ballRAM-240U C sized 1-1/2″ ball).

The cup holder plate is very low profile and stands 3/8″ above the dash. The RAM ball base fits in the recessed pocket and will fit about 5/16” above the top of the mounting plate. Please choose the marine aluminum RAM ball bases listed above when purchasing parts. The outside diameter of the aluminum ball base measures approximately 3.70 OD”.

Visit the RAM Mount website for dimension information. Simply click on any of the links above for more information on the specific items.

The adapter plate is held onto the FX dash by (6) equally spaced 1/4-20 button head cap screws as pictured. It fits inside the 3-11/16″ diameter Yamaha cup hole. Installation requires removal of the right sided Waverunner panel and then drilling 6 holes through the dash around the cup holder. These drilled holes are easily located by placing the pilot of cup holder mount inside the dash hole and aligning the outer button head screw holes with the side panel. Then it’s just a matter of taping the adapter plate to the dash and using the cup holder plate as a drilling template to locate and drill the holes. Removing the side panel is very easy. It only takes a couple minutes to take it off and a couple more minutes to put it back on. Removing the side panel will make easy work of tightening the fasteners and routing your sonar cables.

This cup holder mounting plate is very strong and is designed to be used with a RAM Ball. It is well suited for holding a GoPro, large GPS/sonar fish finders ranging in size up to a large 9″, or any other device having a RAM Mounting ball.

Using a short RAM coupler arm is recommended.

Please Note: An optional under dash backing ring is available for this mount. The button head screws and large stainless under dash washers provided in this kit work VERY well. However, a few people have inquired about a backing plate. While It isn’t necessary on smaller devices, it is highly recommended for 7-9″ chartplotters.

2018-12 FX CHM RAM 3690 ID 312 x4 (3ESH + 2ESH)

Request Additional Information

Due to the specialized nature of my products (every installation is unique), this item cannot be purchased online. Please use the button below to submit a product information request and I will contact you (usually within 24 hours) to complete your order. 

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Shipping Info

Shipping Info: All parts will be shipped in a heat sealed clear poly package.

No rush U.S.P.S shipping is free within the U.S.A..

No rush shipping has a three day handling time plus shipping transit time.

Priority Express (1 BUSINESS day) shipping will be $25. If you pay extra for Priority Express shipping, then I will have the parts in the mail the next U.S.P.S. BUSINESS day.

International buyers will pay additional shipping cost based on weight and package size.

Refund /Returns

Please note, returns will incur a 25% restocking fee. Buyer is responsible for return shipping costs, label, and tracking info.

I do not issue refunds on any parts that have been mounted, used, damaged, or have missing pieces.

Buyer must contact me prior to return for authorization.


BoonDocksPWC uses the following registered trademarks in product descriptions. These registered trademarks (RTM) are the property of the following companies:

  • GoPro is a RTM of the GoPro Company
  • Garmin is a RTM of Garmin Company
  • RAM Ball is a RTM of the NPI RAM Mount Company
  • Yamaha is a RTM of the Yamaha Company
  • Lowrance is a RTM of the Navico Company
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