Yamaha FZR1000

The Yamaha FZR1000 is a motorcycle produced by Yamaha from 1987 to 1995. The 1989 version, crowned the "Bike of the Decade" by Cycle World, had 0-60 acceleration of 2.9 seconds, and a top speed of over 167 mph.

The unique feature which gave the 1989 onward models their EXUP Four-stroke power valve system, a servo motor-driven exhaust valve. This allowed large bore exhaust header pipes (for excellent gas flow at high engine speeds) coupled with the valve restricting flow at lower revs, to speed the gas through. It gave pulling power from low revs, seamlessly, up to the red line at 11,500 rpm. Yamaha used this valve system on the YZF models which followed (Thunderace) and the R1 models from 1998.