that 450r must have been set up very poorly. i'll be honest if the yfz wins stock for stock, it isnt more then a length. ive done PLENTY of races against a yfz and my 450r to know they arent that far apart. my 450r with the hrc kit will edge a stock yfz for a fact. w/e it sounded like it had a pipe, either way that 450r was set up pretty poor if it loses to ANY stock quad. and i have no reason to not believe anybody on what they have. like i said those quads and bikes were bought between TWO ppl over 6 years of buying and trading. believe me, we are not rich. we live in a normal home with substandard vehicles, we just love the toys! so lets put this bullshit behind us. the banshee,450r, and yfz are all great machines and are all close in stock form, but from my experience both 450s out accelerate it, but have the same top speed stock for stock. o and i have no doubts nyuks banshee would beat my quads