Well Im getting a 05 700 KingQuad from a buddy of mine. Well keep and great running. I has a winch and aftermarket tires and wheels, but he is going to keep the tire for the UTV he`s getting. So the question I have is how big of a tire can I put under this thing and what upgrade/performance is available for this rig? I like to play in the mud and riding on the river.

 

I think you can go to 27" without mods. After that I think you'd need a lift. First thing is that if it still has the stock air filter get rid of it and get aftermarket. Stock sucks dirt. The one mos I did and it helped ALOT was an EPI clutch kit. Made a world of difference in the low end.
Hope that helps.
Buck