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The Suzuki Hayabusa holds the world record for being the fastest production bike.This is why if you ever attend a race event, you may see quite a few of these bikes.
Its 1300 cc engine makes its the second biggest engine on a street bike, behind the Kawasaki zx14.
However, the Hayabusa still has the fastest land speed. The link attached is a video of how powerful this bike is, even though the motorcycle in the video has some adjustments done to it.