This kit is designed to fit two full-size automotive Group 34 batteries. It is unlikely that it will be well suited for a side by side. However, you could simply cut a piece of wood or cardboard to the tray dimensions and see if you have the space and support somewhere to mount it. The base of the tray is 14.25 inch by 10.75 inch, and it is 10.5 inch tall up to the top of the isolator.