ill toot the 450 horn also.. i have a 10mm cub banshee and know how to ride.. that said, ive beat tons of stock, modded, 4mm banshees on my stock yfz450.
and look at it this way. you guys are bragging on beating STOCK yfz450's by a couple bike lengths.. if you have pipes, carbs, reeds, porting, better tires etc.. thats either pretty lame or the 450s are pretty fuckin fast.