Built around Kawasaki's sport motorcycle platform, the 2015 Kawasaki Ninja 250SL pairs a 249 cc (15.2 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 28 HP (20.4 kW) at 9,700 rpm while maximum torque reaches 22.6 Nm (16.7 lb-ft) at 8,200 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 112.4 HP per liter and a 1,500 rpm working window between peak torque (8,200 rpm) and peak power (9,700 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Ninja 250SL measures 151 kg (333 lbs) wet (curb), translating to a power-to-weight ratio of 0.19 HP/kg (5.39 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,330 mm (52.4 in) wheelbase engineered for quick, flickable steering geometry. The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 2 indexed model years from 2015 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
112.4 HP/L
Power-to-Weight
0.19 HP/kg (5.39 kg/HP)
Power Band Window
8,200–9,700 rpm
Standover Height
780 mm (30.7 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsTwin, four-stroke
Power28.0 HP (20.4 kW)) @ 9700 RPM
Torque22.6 Nm (2.3 kgf-m or 16.7 ft.lbs) @ 8200 RPM
Compression11.6:1
Bore x Stroke72.0 x 61.2 mm (2.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCBI with digital advance
LubricationForced lubrication, wet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
DrivelineO-ring chain
Chassis
Frame TypeTube diamond
Rake24.0°
Trail90 mm (3.5 inches)
Front Suspension37mm hydraulic telescopic fork / 4.7 in.
Rear SuspensionBottom-link Uni-Trak with 5-way adjustable preload / 5.1 in.
Wheelbase1330 mm (52.4 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Front BrakesSingle disc. Hydraulic. Two-piston calipers. Optional ABS.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
