Well I've had the 450 for 2 days now and still not got it dirty........... tomorow is the day. I spent today fixing stuff which aint broken yet, bars grips blinkers (turn signals) throttle stop etc... did blast up the street, wheel spin in 2nd on the tar is promissing. Two or three things to adress. 1/ The airbox... how are you supposed to get the air in, the change in throttle response by removing the sidecover is aweome. Should be like that all the time, guess I'm drilling cutting and butchering until it works. 2/ Muffler. Why do they even bother delivering with one,trash and cash. I'm hoping to find an FMF Q anybody with experience on these??? I don't want loud just fast. 3/ Only noticed this one late today. Noisy clutch/gearbox, pull the lever no noise, let it go, someone is blending hammers in a cocktail shaker. Still it makes me smile, traded my 01 250 as it had some issues.......... valve clearance etc.