Engineered by Yuki for the scooter motorcycle segment, the 2021 Yuki 125i Falcon utilizes a 125 cc (7.6 cu in) single cylinder, four-stroke layout. In factory specification, peak output is rated at 7.2 HP (5.3 kW) at 7,500 rpm while maximum torque reaches 9.5 Nm (7 lb-ft) at 8,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 57.6 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the 125i Falcon measures 113 kg (249 lbs) dry, translating to a power-to-weight ratio of 0.06 HP/kg (15.69 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 1,320 mm (52 in) wheelbase engineered for quick, flickable steering geometry. The 5.5-liter (1.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 80 km/h (50 mph).
Specific Output
57.6 HP/L
Power-to-Weight
0.06 HP/kg (15.69 kg/HP)
Standover Height
785 mm (30.9 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power7.2 HP (5.3 kW)) @ 7500 RPM
Torque9.5 Nm (1.0 kgf-m or 7.0 ft.lbs) @ 8500 RPM
Fuel SystemInjection. Delphi
Fuel ControlOverhead Cams (OHC)
IgnitionCDI
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Performance
Top Speed80.0 km/h (49.7 mph)
Emission DetailsEuro 4
Chassis
Frame TypeUnderbone
Front SuspensionTelescopic fork
Rear SuspensionMonoshock
Wheelbase1320 mm (52.0 inches)
Wheels & Brakes
Front Tyre120/70-12
Rear Tyre120/70-12
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight113.0 kg (249.1 pounds)
Power/Weight0.0641 HP/kg
Seat Height785 mm (30.9 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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
