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MotoLibrary Score
34/100Commuter
Power/Weight
0.1 hp/kg
Torque
11 Nm
Engine
124 ccm
Technical Overview
2023 Kawasaki Rouser NS125 Fi Technical Analysis & Specification Breakdown
Engineered by Kawasaki for the naked motorcycle segment, the 2023 Kawasaki Rouser NS125 Fi pairs a 124.4 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 12 HP (8.8 kW) at 8,500 rpm while maximum torque reaches 10.8 Nm (8 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 96.5 HP per liter and a 2,000 rpm working window between peak torque (6,500 rpm) and peak power (8,500 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 Rouser NS125 Fi measures 125 kg (276 lbs) wet (curb), translating to a power-to-weight ratio of 0.1 HP/kg (10.42 kg per horsepower). The 10.5-liter (2.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
96.5 HP/L
Power-to-Weight
0.1 HP/kg (10.42 kg/HP)
Power Band Window
6,500–8,500 rpm
Engine
Displacement124.4 ccm (7.59 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power12.0 HP (8.8 kW)) @ 8500 RPM
Torque10.8 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 6500 RPM
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.
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.
