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MotoLibrary Score
48/100Balanced
Power/Weight
0.35 hp/kg
Torque
66 Nm
Engine
649 ccm
Technical Overview
2021 Kawasaki Ninja 650L SE Technical Analysis & Specification Breakdown
At the heart of the 2021 Kawasaki Ninja 650L SE sport motorcycle, Kawasaki pairs a 649 cc (39.6 cu in) liquid-cooled twin, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 67.3 HP (49.1 kW) at 8,000 rpm while maximum torque reaches 66 Nm (48.7 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 103.7 HP per liter and a 1,500 rpm working window between peak torque (6,500 rpm) and peak power (8,000 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 650L SE measures 192 kg (423 lbs) wet (curb), translating to a power-to-weight ratio of 0.35 HP/kg (2.85 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry. The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
103.7 HP/L
Power-to-Weight
0.35 HP/kg (2.85 kg/HP)
Power Band Window
6,500–8,000 rpm
Standover Height
790 mm (31.1 in)
Engine
Displacement649.0 ccm (39.60 cubic inches)
Engine TypeTwin, four-stroke
Power67.3 HP (49.1 kW)) @ 8000 RPM
Torque66.0 Nm (6.7 kgf-m or 48.7 ft.lbs) @ 6500 RPM
Compression10.8:1
Bore x Stroke83.0 x 60.0 mm (3.3 x 2.4 inches)
Valves/Cylinder2
Fuel SystemInjection. DFI® with dual 38mm Keihin throttle bodies
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCBI with digital advance
LubricationForced lubrication, semi-dry sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
DrivelineO-Ring Chain
Chassis
Frame TypeTrellis, high-tensile steel
Rake24.0°
Trail99 mm (3.9 inches)
Front Suspension41mm hydraulic telescopic fork
Front Travel124 mm (4.9 inches)
Rear SuspensionHorizontal back-link with adjustable spring preload
Rear Travel130 mm (5.1 inches)
Wheelbase1410 mm (55.5 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-17
Rear Tyre160/60-17
Front BrakesDouble disc. Petal discs and two-piston calipers. ABS.
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc. Petal disc and single piston caliper. ABS.
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Weight incl.192.0 kg (423.3 pounds)
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Overall Height1135 mm (44.7 inches)
Overall Length2055 mm (80.9 inches)
Overall Width740 mm (29.1 inches)
Fuel Capacity15.00 litres (3.96 US gallons)
Other
StarterElectric
Color OptionsMetallic spark Black/ Pearl Nightshade Teal
InstrumentsAnalogue-style tachometer and multi-function dual-window LCD screen
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.
