Engineered by Keeway for the custom - cruiser motorcycle segment, the 2021 Keeway K-Light 125 relies on a 124.8 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 10.5 HP (7.6 kW) at 9,000 rpm while maximum torque reaches 8.9 Nm (6.6 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 84.1 HP per liter and a 1,500 rpm working window between peak torque (7,500 rpm) and peak power (9,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the K-Light 125 measures 144 kg (317 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (13.71 kg per horsepower). Rider ergonomics and chassis geometry center around a 715 mm (28.1 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,258 mm (49.5 in) wheelbase engineered for quick, flickable steering geometry. The 11.8-liter (3.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Keeway archive, this model family spans 3 indexed model years from 2021 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
84.1 HP/L
Power-to-Weight
0.07 HP/kg (13.71 kg/HP)
Power Band Window
7,500–9,000 rpm
Standover Height
715 mm (28.1 in)
Engine
Displacement124.8 ccm (7.62 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power10.5 HP (7.6 kW)) @ 9000 RPM
Torque8.9 Nm (0.9 kgf-m or 6.6 ft.lbs) @ 7500 RPM
Compression9.0:1
Bore x Stroke56.5 x 49.5 mm (2.2 x 1.9 inches)
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionC.D.I
LubricationPressure splash lubrication
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet multi-plate
Chassis
Frame TypeBassinet
Front SuspensionTelescopic
Front Travel120 mm (4.7 inches)
Rear SuspensionTelescopic coil spring oil damped
Rear Travel55 mm (2.2 inches)
Wheelbase1258 mm (49.5 inches)
Ground Clearance150 mm (5.9 inches)
Wheels & Brakes
Front Tyre90/90-17
Rear Tyre130/70-15
Front BrakesSingle disc
Front Brake Ø280 mm (11.0 inches)
Rear BrakesSingle disc
Rear Brake Ø240 mm (9.4 inches)
WheelsAlloy rims
Dimensions & Weight
Dry Weight144.0 kg (317.5 pounds)
Power/Weight0.0726 HP/kg
Seat Height715 mm (28.1 inches) If adjustable, lowest setting.
Overall Height1100 mm (43.3 inches)
Overall Length2140 mm (84.3 inches)
Overall Width780 mm (30.7 inches)
Fuel Capacity11.80 litres (3.12 US gallons)
Other
StarterElectric & kick
Color OptionsOrange, grey, black
Warranty2 years
Notes
Keeway is the American and European brand name of Qianjiang, China.
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.
