Sprockets?

[Vtwin650]

I am sure I could find this somewhere, but I tend to be on the lazy side.

What would be the best sprocket combo for speed - off the line
and what about for gas mileage - commuting on highway?

can someone explain how it works, one tooth up in rear, what happens, one tooth down...etc...?

Thanks for the help for the challanged!

[Vtwin650]

also, what are the stock sizes?

[dagus]

JD Hord at http://www.meccanicacorse.net/ has the right sprockets & chains for the Hawk. Go for steel, not aluminum, unless you like replacing stuff often.