Well I had my bike on some roads that are 2 lane nothing around. So you can just start cruising up there without noticing. I had my bike wide open and hit 75-80MPH. I would have it in 5th gear at 3/4 from wide open and that was it, the ducks guts. Just with that last 1/4 was more power without changing the sprockets around. I guess if I did there would be a couple of extra miles to squeeze out. Man that bike was humming.