I got these specs for a '96 model off another site and I can't verify their absolute accuracy, but it should give you a good idea.
1996 Suzuki GSX600 Katana
Suggested retail price: $ 5,999
Type: Air/oil-cooled, transvers, four-stroke four
Valve arrangement: DOHC, 4 valves/cylinder
Displacement: 599 cc
Bore x stroke: 62.6 x 48.7 mm
Compression ratio: 11.3:1
Carburation: Four 33mm Mikuni CV
Transmission: 6 speed
Front suspension: 41mm telescopic, 5.1 in. travel; adjustment for rebound damping
Rear suspension: Single Showa damper; adjustments for preload and rebound damping
Front brake: 2, four-piston calipers, 290mm discs
Rear brake: Double-action caliper, 250mm disc
Front wheel: 3.00 x 17 in.; cast aluminum
Rear wheel: 3.50 x 17 in.; cast aluminum
Front tire: 110/80V17 Dunlop K655F
Rear tire: 140/90V17 Dunlop K655
Rake/trail: 24.3 deg./3.9 in. (98mm)
Wheelbase: 56.3 in.
Seat height: 30.5 in.
Fuel capacity: 4.8 gal.
Fuel consumption (Hi/Low/Ave): mi.
Avg. range inc. reserve: mi.
Weight: lb. dry; 493 lb. wet
Quarter mile: 11.92 @ 110.6
0-30 mph: 0.0 sec.
0-60 mph: 0.0 sec.
0-90 mph: 0.0 sec.
0-100 mph: 0.0 sec.
Top gear time 40-60 mph: 0.00 sec.
Top gear time 60-80 mph: 0.00 sec.
Top gear time 80-100 mph: 0.00 sec.
Measured top speed: 134.00 mph
Engine speed at 60 mph: rpm
Breaking from 30 mph: ft.
Breaking from 60 mph: ft.