My 400 auto shifts way to early and doesn't have enough low end and to much high end. Do I need to purchase a EPI clutch kit? How hard are they to install? Where can I find one? My Arctic Cat dealer suggested to rotate the clutch 30 degrees and take some weights out of the back of the clutch. Have you ever heard of this?

 

JERFITZ if your ridding in muddy areas make sure you run it in low because you,ll burn out your belt premature and if you still have stock tires maybe lust adding one of those black spring is all you need