I have a 2015 yt XLS with a cup holder and unless the holes are on the bottom and little holes, it is for water drainage like the other compartments on the model I have. I have discovered many things on the body and frame that would only be useful with add on parts. they make everything modular so you cup holder could be part of a brace system for a cab or maybe a light mount to point rearward for attachments and such. I am so fed up with the engineers at Husqvarna in Sweden here and kinda now my dealer. I am just going to make whatever out of what I bought. Mount a fan in that cup holder or a bottle of Planter's nuts.