Built around Kawasaki's sport motorcycle platform, the 2019 Kawasaki Ninja 125 pairs a 125 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 9.5 HP (6.9 kW) at 8,000 rpm while maximum torque reaches 9.6 Nm (7.1 lb-ft) at 7,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 76 HP per liter and a 500 rpm working window between peak torque (7,500 rpm) and peak power (8,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Ninja 125 measures 101 kg (223 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (10.63 kg per horsepower). Rider ergonomics and chassis geometry center around a 805 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,175 mm (46.3 in) wheelbase engineered for quick, flickable steering geometry. The 7.4-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 6 indexed model years from 2019 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
76 HP/L
Power-to-Weight
0.09 HP/kg (10.63 kg/HP)
Power Band Window
7,500–8,000 rpm
Standover Height
805 mm (31.7 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power9.5 HP (6.9 kW)) @ 8000 RPM
Torque9.6 Nm (1.0 kgf-m or 7.1 ft.lbs) @ 7500 RPM
Bore x Stroke56.0 x 50.6 mm (2.2 x 2.0 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionDigital
CoolingLiquid
Transmission
Final DriveChain (final drive)
Chassis
Front SuspensionInverted fork
Rear SuspensionOffset laydown single-shock with adjustable preload
Wheelbase1175 mm (46.3 inches)
Wheels & Brakes
Front Tyre100/90-12
Rear Tyre120/70-12
Front BrakesDouble disc
Front Brake Ø200 mm (7.9 inches)
Rear BrakesSingle disc
Rear Brake Ø185 mm (7.3 inches)
Dimensions & Weight
Weight incl.101.0 kg (222.7 pounds)
Seat Height805 mm (31.7 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.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
