MOPED ARMY

On a brand new one (A55), with a Biturbo, foam Unifilter, rejetted carb, and 22 tooth rear sprocket, you should get low 40s. Peace, Jerry.

bs......i have a biturbo and have gone 45 on a regular street and 50 on a sight hill..yes they are awsome

I have an '08 Sprint, not an ST, but they are the same thing, except my Sprint doesn't have turn signals. I average 43 with that setup, but I'm 6' 200 lbs. I can go a little faster tucked in. You have to kit an A35 to get those speeds. That new A55 is a killer engine, a far cry from the defective POS it was back in '05, even if there are a lot of people who say it's the same. It's not, and that's pretty obvious. True, it still has that catalytic exhaust on it, but if you are planning to buy one, plan on tossing that as soon as you get it. Put a decent pipe and a less restrictive air filter on it so it can breath, and it's a real screamer (and it doesn't break down, blow up, crap out, or whatever it was that so many of the '05s did). Peace, Jerry.