[motion]

Well, the TZ weighs around 100 pounds less (220 lbs) and has 20 hp more (80 hp). I don't have any time on my TZ yet, since I crashed it after just a few laps a couple years ago. But I do remember it being fast as hell, where the Aprilia is a bit gutless. But then again, I mostly race at Willow Springs wich is mostly WFO for 9 turns, 2.6 miles. HP rules at this track. The Aprilia is definitely the most smiles per miles of any bike I've ridden, though! Gas-n-go 2-stroke racing doesn't get any better. Just my opinion, but a 450 V-Twin does not belong in this chassis. 2-strokes rule!!!