There are a few nutters who use turbos on the road, they save the NOS for the strip....
Way back in the 80's there was a turbo bike from each of the japanese manufacturers, Yamaha put a turbo and a square fairing on their XJ650, I rode one was kinda fun but gutless low down.
http://www.xj650.de/galerie/xj650_turbo/xj650_turbo.htm
Honda had a CX500 turbo, maybe even CX650 turbo in the free world.
Ugly as sin the lot of 'em.
http://www.honda.ca/MotorcycleEng/Cl...1981+CX500.htm
The Suzuki XN85 was no better ...
http://www.motorbikes.be/en/Suzuki/1...%2085%20Turbo/
Best of that bad bunch was the Kawasaki GPZ 750 Turbo
http://www.vintagebike.co.uk/Bike%20...rbo%201984.htm