1998 Kawasaki Ninja ZX-9R

 Engine Configuration  Inline Four, 4-Stroke, DOHC
 Engine Displacement  899 cc
 Engine Cooling System  Liquid
 Compression Ratio 11.5:1
 Combustion Chamber Design  Pentroof
 Valves Per Cylinder  4
Intake Valves Per Cylinder
 2
Exhaust Valves Per Cylinder
 2
 Bore x Stroke 75 x 50.9 mm
 Claimed Peak Horsepower 141 bhp @ 11,000 rpm
 Claimed Peak Torque 73 lbs. - ft. @ 9,000 rpm
 Engine Redline 12,000 rpm
 Valve Angle (Included)  12 degrees intake, 13 degrees exhaust (25 degrees)
 Combustion Chamber Volume N.A.
 Valve Train Type  DOHC, Link-plate Chain Drive,
Bucket Followers, Shim-under-bucket
Lash Adjustment
 Valve Adjustment Interval 6000 miles
 Intake Valve Diameter 30 mm
 Exhaust Valve Diameter 26 mm
 Intake Valve Stem Diameter 4.5 mm
 Exhaust Valve Stem Diameter 4.5 mm
 Intake Valve Maximum Lift  9.2 mm
 Exhaust Valve Maximum Lift  8.7 mm
 Intake Valve Timing  
Open BTDC
 55 degrees
Close ABDC
 81 degrees
  Duration
 316 degrees
 Exhaust Valve Timing  
  Open BBDC
47 degrees
  Close ATDC
65 degrees
  Duration
292 degrees
 Valve Timing Measuring Point 0.3 mm.
 Fuel Delivery System (4) Kehin CVKD40
 Carburetor Venturi Size 40 mm
 Air Filter Type Foam
 Exhaust System Type   4-1
 Ignition System   Digital Electronic
 Lubrication System  Wet Sump
 Oil Capacity 4.1 quarts
 Fuel Capacity 5 gallons
 Transmission Type  6-speed, Constant Mesh
 Clutch Type  Multi-plate, Wet
Clutch Actuation System
Cable
Clutch Spring Type
 Coil
Number Of Clutch Springs
5
 Number of Clutch Plates 19
Drive Plates
10
Driven Plates
9
 Primary Drive  Gear
 Primary Drive Gear Teeth (Ratio) 84/ 49 (1.714:1)
 Final Drive Sprocket Teeth (Ratio) 16/ 41 (2.563:1)
 Transmission Gear Teeth (Ratios)  
6th
 23/ 21 (1.095:1)
5th
24/ 20 (1.200:1)
4th
28/ 21 (1.333:1)
3rd
28/ 18 (1.556:1)
2nd
33/ 17 (1.941:1)
1st
36/ 14 (2.571:1)
 Transmission Overall Ratios
  6th
4.807:1
  5th
5.268:1
  4th
5.852:1
  3rd
6.831:1
  2nd
8.521:1
  1st
11.287:1