Ever since I got on this forum I have seen that most of you at 40mph hit 4K, weather its when its brand new or after its loosened up. I have about 1100 miles or so on mine and at 40mph Iam at like 5000-5200rpm, lol.I wonder ifit just needs more time to loosen up? Or mabye itsthat the manufacturing process is not always exact from one bike to the next and mine just happened to get shorter gears.