Re: what size are the first gen\'s clip-ons?
Here you go ya clown...I measured my old forks hanging in the garage at 41mm.
I checked Suzuki GSX-R 750 by Gary Pinchin (ISBN 1 86126 082 2) and it lists the following dimensions...
86 G & RG..41mm
87 H..41mm
88 J..43mm
89 K..43mm
90 L..41mmUSD
I have an article from the July 1986 CYCLE "750's vs 1000's" It gives the specs for an '86 1100 as having 41mm forks like the 750's do. I would probably be wrong in assuming that the other years of 1100's are the same as the 750's. At least up until they switched to USD's.
Hope it helps big guy.