I have tried the Maxis I Razr and the Maxis Razr on my 400ex. I am not a huge fan of either. Being a bigger man they seem to roll over to much in the corners and makes the ride a little to slide prone. I think I am going to try the ITP line next time. I have a buddy with them on his 250ex and he powers through mud that should burry him.

 

Im thinking about going with the Razrs for GNCC racing they are 6 ply and should hold up ok I hope.

 

Razr 2 or holeshot HD pr holeshot xcr i have had them all very good tires and very little wear on pavement i got over 100 miles on my HDs and even some burnouts and they aren't even at the replacement line or mark or whatever you want to call it.

 

I've ran RAZR2 21x7x10 Fronts, and grooved RAZR 20x11x9 rears for years with good luck.