Air Filter - Bike in question in AZ was BRAND NEW with the STOCK...as in the one that shipped with it, Air Filter. Everyone I ride with is WELL AWARE that the old Filters don't fit.
BT - I've only about a tank of gas through the YZ. This is all in comparision to my '00 CR250 with a Fatty pipe and a PV spacer....So far, well it's the motor, like I said before "Roll On" in the corners is much more controllable, much MUCH stronger. I can just roll on an exit under control with more speed than I could with the '00 CR. It pulls without a hitch all the way to a surprisingly good top end and over rev! It's SMOOOTH and Strong...I though you couldn't "have it all". Bottom line, the motor is fast...Easily faster than my '00CR and more importantly...easy to go fast with! :D Suspension is very stiff so far, but it needs to break in...I'm 217 so it must feel VERY stiff to lighter guys! :eek: I've got heaver springs on order but I'll wait until things break in a bit to install them. I believe some of the "STIFF FRAME" stuff in the Mags is really the fork...that puppy is Supercross stiff. IMHO- It's easier to fix suspension than motor. Bike feels light and nimble...handling is a lot like my Honda, except I think the Yamaha tracks a line better. Brakes have good feel and I like the new lay out...it's easy to get forward in turns. All in all, I think the YZ is best bike by far for a novice like me. :)