311 mph
I actually know the guy, have been dealing parts with him for years now.

http://www.autoblog.com/2011/07/20/w...otorcycle-run/

http://www.cyclecanadaweb.com/articles/12186/

Pov footage of 300mph on a bike.
http://www.allaboutbikes.com/motorcy...ing-ride-video

Un fukkin real