Built around Kawasaki's sport motorcycle platform, the 2002 Kawasaki ZX-9R Ninja pairs a 899 cc (54.9 cu in) liquid-cooled in-line four, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 144 HP (105.1 kW) at 11,000 rpm while maximum torque reaches 101 Nm (74.5 lb-ft) at 9,200 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 160.2 HP per liter and a 1,800 rpm working window between peak torque (9,200 rpm) and peak power (11,000 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the ZX-9R Ninja measures 186 kg (410 lbs) dry, translating to a power-to-weight ratio of 0.77 HP/kg (1.29 kg per horsepower). Rider ergonomics and chassis geometry center around a 827 mm (32.6 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,417 mm (55.8 in) wheelbase engineered for quick, flickable steering geometry. The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 7 indexed model years from 1996 to 2003, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
160.2 HP/L
Power-to-Weight
0.77 HP/kg (1.29 kg/HP)
Power Band Window
9,200–11,000 rpm
Standover Height
827 mm (32.6 in)
Engine
Displacement899.0 ccm (54.86 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsIn-line four, four-stroke
Power144.0 HP (105.1 kW)) @ 11000 RPM
Torque101.0 Nm (10.3 kgf-m or 74.5 ft.lbs) @ 9200 RPM
Compression12.2:1
Bore x Stroke75.0 x 50.9 mm (3.0 x 2.0 inches)
Valves/Cylinder4
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Front Travel120 mm (4.7 inches)
Rear Travel135 mm (5.3 inches)
Wheelbase1417 mm (55.8 inches)
Ground Clearance158 mm (6.2 inches)
Wheels & Brakes
Front Tyre120/70-ZR17 M/C 58W
Rear Tyre190/50-ZR17 M/C 73W
Front BrakesDual disc
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight186.0 kg (410.1 pounds)
Power/Weight0.7742 HP/kg
Seat Height827 mm (32.6 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
