Engineered by Kawasaki for the naked motorcycle segment, the 2015 Kawasaki Z250SL pairs a 249 cc (15.2 cu in) liquid-cooled twin, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 32 HP (23.4 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 128.5 HP per liter, 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 Z250SL measures 148 kg (326 lbs) wet (curb), translating to a power-to-weight ratio of 0.22 HP/kg (4.63 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 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, while factory top speed is listed at 170 km/h (106 mph).
Within MotoLibrary's Kawasaki archive, this model family spans 3 indexed model years from 2015 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
128.5 HP/L
Power-to-Weight
0.22 HP/kg (4.63 kg/HP)
Standover Height
785 mm (30.9 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power32.0 HP (23.4 kW))
Compression11.6:1
Bore x Stroke62.0 x 41.2 mm (2.4 x 1.6 inches)
Valves/Cylinder4
Fuel SystemCarburettor. Keihin CVK30 x 2
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCBI with digital advance
LubricationForced lubrication, semi-dry sump
CoolingLiquid
Max RPM12500
Transmission
Gearbox6-speed
Final DriveChain (final drive)
DrivelineO-ring chain
Performance
Top Speed170.0 km/h (105.6 mph)
Chassis
Frame TypeTube diamond
Rake24.0°
Trail90 mm (3.5 inches)
Front Suspension37mm hydraulic telescopic fork
Front Travel119 mm (4.7 inches)
Rear SuspensionUni-Trak with adjustable spring preload
Rear Travel130 mm (5.1 inches)
Wheelbase1330 mm (52.4 inches)
Ground Clearance180 mm (7.1 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre140/70-17
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.
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.
