Info on ZXR400
From Kwaks Owners Club UK website
Model Code - 1989 to 1990 ZX400H and J (track version), 1991 on ZX400L and ZX400M (ZXR400R), 1994 ZX400L4A (limited edition version in WSB colours)
C.C. - 398
Maximum power - 65 PS
Engine type - 4-stroke, liquid-cooled In-Line Four
Valve system - DOHC, 16 valves
Starting - Electric
Transmission - 6-speed with Positive Neutral Finder
Frame - Perimeter, aluminium
Fuel capacity (litres) - 16
Dry weight (kg) - 162
Suspension - 41mm upside-down tele forks and Uni-Trak, both with rebound damping plus preload adjustment
OEM tyre sizes (front & rear) -Tubeless radial 120/60 R17 160/60 R17
Brakes - front, Dual semi-floating discs, rear, Single disc
Wheelbase (mm) - 1,385
Seat height (mm) - 790
Top Speed (M.P.H.) - 140
Standing 1/4 mile (seconds) - 12.8
M.P.G. (range or average) - 45
Quite potent for a small bike & used a lot for 400cc class club racing in the UK