If you want to go as fast as possible, then you need to buy one of these incredible speed machines that leave regular sport ...

Yamaha, the popular Japanese bike manufacturer, is known for making some really fast bikes. However, it has never held the title of the fastest bike in the world like Suzuki, Honda, or Kawasaki.

Many of these incredibly fast motorcycles can be found on the used market for less than $5k. To put that into perspective, the only decent new sports bike you can get for that kind of money is the ...