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MotoLibrary Score
34/100Commuter
Power/Weight
0.09 hp/kg
Torque
11 Nm
Engine
148 ccm
Technical Overview
2014 Keeway RK III 150S Technical Analysis & Specification Breakdown
Engineered by Keeway for the sport motorcycle segment, the 2014 Keeway RK III 150S features a 148 cc (9 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 11.9 HP (8.7 kW) at 8,000 rpm while maximum torque reaches 11 Nm (8.1 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 80.4 HP per liter and a 2,000 rpm working window between peak torque (6,000 rpm) and peak power (8,000 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 RK III 150S measures 128 kg (282 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.76 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
80.4 HP/L
Power-to-Weight
0.09 HP/kg (10.76 kg/HP)
Power Band Window
6,000–8,000 rpm
Standover Height
800 mm (31.5 in)
Engine
Displacement148.0 ccm (9.03 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.9 HP (8.7 kW)) @ 8000 RPM
Torque11.0 Nm (1.1 kgf-m or 8.1 ft.lbs) @ 6000 RPM
Compression9.2:1
Bore x Stroke57.0 x 58.0 mm (2.2 x 2.3 inches)
Fuel SystemCarburettor
Fuel ControlOverhead Valves (OHV)
IgnitionTLI
LubricationPressure splash
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multiple-plate
Chassis
Frame TypeStraddle type
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 BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø130 mm (5.1 inches)
WheelsBlack, 5-spoke
Dimensions & Weight
Dry Weight128.0 kg (282.2 pounds)
Power/Weight0.0933 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
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.
