After looking at some random dyno charts of these motors I'm no longer worried about how high it could potentially rev, power seems to peak around 7k. Instead I'll shift my focus over to improving the intake, mainly getting a cnc intake and an VM18 carb. This bike already rockets from 20 to 36 mph, I'm excited to see what a proper carb/intake can make it do. Despite Robert's dubiousness the motor I received from him is rock solid and makes great power compared to the ebay special I started out with.