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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