I just went on an 8 mile ride, the first 6 of it wet gravel and went roughly 30 the entire time. The last 2 miles were trail and street. I have a 48v 20ah battery from Ebay for $180 and a violamart 1500watt hub for $190. It's a decent system so far but since you have that sweet bike you may want a bigger system and possibly a 52 volt pack or more. Mine goes pretty fast at 34 mph but I'm sure a guy would like to go faster on a better bike like yours.