9 - Aprilia Tuono V4 R APRC 
Making no compromises, one of the most radical standard sport bikes on the market boasts a 167-horsepower V4 engine that's almost as explosive as the race-spec variant, literally shooting you out of corners like a cannonball. Add a sonorous exhaust note and a WSBK-winning frame, and you get one of the highest-performing street bikes in 2014. Making the most of it requires quite a bit of experience, mind you. Fortunately, the Tuono V4 R APRC includes traction control, wheelie control, launch control, and shifting assist.

Photo: Aprilia