Go take a look on the Butler web site. My wife and I have them on our wings and they are great.
Sorry I got in here kind of late. I have the '21 Tour and I bought the "Big Ass Cup Holders" from Wingstuff. What I like is that almost all of my cooler cups as well as styrofoam cups from gas stations drop in nicely. If I'm taking a drink and I have an "Oh $hit!" moment I don't have to fumble with fitting my cup back into the holder: it just drops in and the rubber conforms to the shape/size of the cup. I really like mine. I think the attachment is by Ciro.I'd like to install a decent drink holder on my wing. I had one made by KENIMOTO on my Voyager that worked out perfectly. Any guidance would be appreciated. Thanks