you can ride your bike up or down any hill at full throttle if your bike is tuned!!!! i always ride down hills and go as fast as i can AS LONG AS I AM CONFIDENT THAT I HAVE THE CORECT JET IN MY BIKE. and that it is in perfect working order. this guy who soft siezed did not change his jet. i don't care what anybody says. you change something on your bike, you change the jet. learn from this guys mistake.