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Drop-in Drink Holder Tumbler Converter Ring

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Are you sick of your drink not fitting tightly in your cup holder and rattling around when you are under way? Our drop-in drink holder converter ring will secure your larger tumbler eliminating all concerns of tips and spills. Designed to fit most 3.5” cup holders, it is easily installed and removed with little effort.

Key Features:

  • Converts cup holder to more securely hold tumbler cup
  • Fits 3.5" cup holders
  • Inside Width: 3.25" Outside Width: 4.125" Height: 0.75"
  • Composed of durable King Starboard
Stainless cup holder sold separately.
Drop-in Drink Holder Tumbler Converter Ring

Frequently Bought Together

  1. Drop-in Drink Holder Tumbler Converter Ring
  2. +
  3. 3.5" Stainless Steel Cup Holder
Total price: $0.00

3.9 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I cut a 3 3/4” hole in my gunwale and used some marine adhesive to secure the cup insert. It works great with my yeti tumbler
September 25, 2018
3 months ago
Love My Tumbler Rings!!
Love these cup holder rings!! They are made from high quality material. They keep my Yeti tumbler in place while at high speeds!!! I recommend these for anyone with a yeti style tumbler!
August 21, 2018
4 months ago
It only works with Yeti, the other similar cups do not fit.
June 6, 2018
7 months ago
work great
no more drinks sloshing around in the cup holders
May 21, 2018
7 months ago
Great idea, but too tight for 3.5in cup holder.
Great idea, and they look high quality. Expensive but ordered 2 to save myself the hassle of making them. Problem is they do not fit my boat’s 3.5in cup holders. I will need to shave off 1/16in to get them to fit without breaking them, defeating the purpose of the purchase.
April 30, 2018
Misrepresented from beginning to end. I will avoid this seller in all future purchases. Beware!
March 12, 2018
9 months ago
Response from Boat Outfitters
Unfortunately this customer thought this trim ring included the stainless steel cup holder. To avoid this going forward, we've added a note on the product page to clarify that the cup holders are not included. We also issued a full refund for the total value of the order, including shipping. The intention is certainly never to deceive, so thank you for bringing to our attention a potential source of confusion.
March 13, 2018
Andrew B Staff
pretty cool work great good idea
December 25, 2017
1 year ago
Questions / Answers
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Browse 2 questions Browse 2 questions and 2 answers
Are they only available in white? Or are they available I other starboard colors?
A shopper on Apr 22, 2018
BEST ANSWER: Great question! Currently, they are available for order online in White. However, if you would like a quote on making them out of another color, please reach out to us.
Cup measurement?
A shopper on Jan 4, 2018
BEST ANSWER: Hello, this insert will hold cups up to 3.25" in diameter. It was really designed to securely hold double walled tumblers securely in a a standard 3.5" cup holder. I will include the full list of measurements below for you to review.

Fits 3.5" cup holders
Inside Width: 3.25" Outside Width: 4.125" Height: 0.75"
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