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MotoLibrary Score
34/100Commuter
Power/Weight
0.09 hp/kg
Torque
9 Nm
Engine
124 ccm
Technical Overview
2014 Keeway RK III 125S Technical Analysis & Specification Breakdown
At the heart of the 2014 Keeway RK III 125S sport motorcycle, Keeway relies on a 124.1 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 11 HP (8 kW) at 8,500 rpm while maximum torque reaches 9.2 Nm (6.8 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 88.6 HP per liter and a 1,500 rpm working window between peak torque (7,000 rpm) and peak power (8,500 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 RK III 125S measures 128 kg (282 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (11.64 kg per horsepower). Rider ergonomics and chassis geometry center around a 800 mm (31.5 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 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
88.6 HP/L
Power-to-Weight
0.09 HP/kg (11.64 kg/HP)
Power Band Window
7,000–8,500 rpm
Standover Height
800 mm (31.5 in)
Engine
Displacement124.1 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.0 HP (8.0 kW)) @ 8500 RPM
Torque9.2 Nm (0.9 kgf-m or 6.8 ft.lbs) @ 7000 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)
IgnitionTLI
LubricationPressure splash lubrication
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multiple-plate
Chassis
Frame TypeStraddle typ
Front SuspensionTelescopic forks
Front Travel128 mm (5.0 inches)
Rear SuspensionTelescopic coil spring oil damped
Rear Travel55 mm (2.2 inches)
Wheelbase1320 mm (52.0 inches)
Ground Clearance150 mm (5.9 inches)
Wheels & Brakes
Front Tyre2.75-18
Rear Tyre3.25-18
Front BrakesExpanding brake (drum brake)
Front Brake Ø220 mm (8.7 inches)
Rear BrakesSingle disc
Rear Brake Ø190 mm (7.5 inches)
WheelsBlack, 5-spoke rims
Dimensions & Weight
Dry Weight128.0 kg (282.2 pounds)
Power/Weight0.0859 HP/kg
Seat Height800 mm (31.5 inches) If adjustable, lowest setting.
Overall Height1120 mm (44.1 inches)
Overall Length2060 mm (81.1 inches)
Overall Width730 mm (28.7 inches)
Fuel Capacity16.00 litres (4.23 US gallons)
Other
StarterElectric & kick
Color OptionsOrange
InstrumentsAnalog/digital
Notes
Keeway is the American and European brand name of Qianjiang Group, 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.
