Been looking around for some replacement cupholders and found this site. Most cupholders are 4 1/4 inches at the lip these are 4 inches just like the ones we have in our Slingshot. They have some cool colors.
Only difference seems to be one 1/2 inch shorter in depth.
Poker Table Cup Holders | Drink Holders | Poker Table Materials
6$ for 2 but $15 and shipping?? that’s a little crazy