Good info here. I have a 2004 DRZ400 and feel its an absolutely wonderful machine for the southern Cali Desert. The front sprocket sounds like an economical swap that I intend to do this weekend to help me smoke up the sand hills. Whoever at Suzuki put thoes terrible "dual sport" tires on this machine should be hung by his/ her thumbs for eternity. New Maxxix knobbies and she goes down all the trails like a champ.