Not sure, whatever stock is as I have not changed it. I ride in Maine and I can see 100 speedo pretty easily, up to 103 on some of the trails here and then above that if I hold it for a bit on the real long straights. I'm keeping my track at specs, and belt adjusted correctly and clutches faces cleaned every couple weeks. I think I have 1600 miles on it now.What gearing do you have? I have that track and can barely see 100....99 forever it seems.