1985 Kawasaki GPz 750 Turbo
Piloted by racer Jay Gleason, a GPz-750 Turbo ran a 10.71 second quarter-mile time in 1985, breaking Gleason's own fastest production motorcycle record of 10.84 seconds, set in 1983 on a Honda V65 Magna.
As more power was coaxed out of naturally-aspirated engines, the more expensive and complex turbos fell out of favor. 1985 would be the last year a production turbocharged motorcycle was offered for sale in the U.S. Kawasaki produced around 5,500 turbo-bikes for the 1984 model-year and approximately 2,500 in 1985.