Tires

Maxxis Razr 2 would be my first choice.

Second Choice Holeshot HD's. Both are six ply tires but the Maxxi's are a bit meatier. I would lose the stock tires as soon as you can before they strand you somewhere. They're like balloons.

I just put of Maxxis RAZR 2 on both my 660 and my wifes 350 and I love them. They are a great tire choice.

dont cross out the kenda knarly's or the kenda klaw's, they are both good tires. the knarly's are a bit more aggressive for the mud though, more of a gncc style tire.

I have Maxxas razrs in the rear and i ride on dusty trails. I can see that for mud and water, razr 2 rears would be an exelent choice! Itp just released some new tires that would be worth looking into also. Mudlite SP is for what you are lookin' for also.