At the heart of the 2015 Keeway Ajax 150 sport motorcycle, Keeway features a 149.4 cc (9.1 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 11 HP (8 kW) at 8,500 rpm while maximum torque reaches 10 Nm (7.4 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 73.6 HP per liter and a 1,000 rpm working window between peak torque (7,500 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 Ajax 150 measures 99 kg (218 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9 kg per horsepower). Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,246 mm (49.1 in) wheelbase engineered for quick, flickable steering geometry. The 11.3-liter (3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 97 km/h (60 mph).
Within MotoLibrary's Keeway archive, this model family spans 2 indexed model years from 2015 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
73.6 HP/L
Power-to-Weight
0.11 HP/kg (9 kg/HP)
Power Band Window
7,500–8,500 rpm
Standover Height
770 mm (30.3 in)
Engine
Displacement149.4 ccm (9.12 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.0 HP (8.0 kW)) @ 8500 RPM
Torque10.0 Nm (1.0 kgf-m or 7.4 ft.lbs) @ 7500 RPM
Compression9.2:1
Bore x Stroke62.0 x 49.5 mm (2.4 x 1.9 inches)
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
LubricationPressure splash
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multiple-plate
Performance
Top Speed97.0 km/h (60.3 mph)
Chassis
Frame TypeArch bar truck
Front SuspensionTelescopic forks
Front Travel130 mm (5.1 inches)
Rear SuspensionSwing arm
Rear Travel60 mm (2.4 inches)
Wheelbase1246 mm (49.1 inches)
Ground Clearance150 mm (5.9 inches)
Wheels & Brakes
Front Tyre2.75-18
Rear Tyre3.00-18
Front BrakesSingle disc
Front Brake Ø205 mm (8.1 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø130 mm (5.1 inches)
Dimensions & Weight
Dry Weight99.0 kg (218.3 pounds)
Power/Weight0.1111 HP/kg
Seat Height770 mm (30.3 inches) If adjustable, lowest setting.
Overall Height1224 mm (48.2 inches)
Overall Length1979 mm (77.9 inches)
Overall Width724 mm (28.5 inches)
Fuel Capacity11.30 litres (2.99 US gallons)
Other
StarterElectric & kick
Color OptionsWhite, blue
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.
