Where can I find one of these short seats to use occasionally on a 04 PRO X 600 will it fit?

The seat will fit, but finding one may be difficult. They are in high demand and are therefore expensive. Keep an eye out on e-bay, as well as the classified sections on here and on Snowest.

Buy a Pro xr seat instead, much more comfortable, but all these shorties have terrible foam core inside, this needs to be swapped for better material, or else they sag out, and your stock pro x seat is better, another way is to go boss highrise, these seam to be the shit, probably the best seat out there, check ebay also,i have seen a couple sell the past month.. happy hunting :beerchug:

You missed the boat, i just sold one on here 2 weeks ago to 01xc800. :sleep3:

Oh great. I knew my seat on the 600 Pro-X2 I bought last year felt a little sagged. Any ideas where is a good place to get this done (during the summer of coarse). TIA

Tom