Sportsman 800 belts and eps

I have a 2006 sportsman 800 production date 06/06/06 to be exact. Trying to figure out if I have the right belt on. What’s the difference between the 3211113 and the 3211106? Did all 800 come eps? My rpm engagement seems higher than it should be and the quad seems to hit a wall at 80km. Everything in the clutch is stock to my knowledge?? Any ideas?