I just pulled the trigger on a 2011 yz450f. I will pick it up next week and try to get it into (MX) race mode asap. Changing the bike mid season is a bad idea, but I had to get a new ride. To save some time I would like to profit from your experiences. Here are a few questions: - OEM bars feel too low. Does anyone know the height, sweep of the OEM bars? - @ 220lbs w/o gear I am planing to go with 5.0 & 60 N/mm springs, good idea? Imediate revalve necessary for a B-Vet? Valving feels preatty stiff when new. - I will do one week of trailriding a year. Is the GYTR off-road flywheel a good idea or is a woods map good enough to go slow. - Any ideas or must haves other than Power Tuner, longer link etc.