At the heart of the 2017 Yamaha Jupiter MX King 150 scooter motorcycle, Yamaha features a 155 cc (9.5 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 15.2 HP (11.1 kW) at 8,500 rpm while maximum torque reaches 13.8 Nm (10.2 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 98.1 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 reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Jupiter MX King 150 measures 116 kg (256 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.63 kg per horsepower). Rider ergonomics and chassis geometry center around a 765 mm (30.1 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,240 mm (48.8 in) wheelbase engineered for quick, flickable steering geometry. The 4.2-liter (1.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
98.1 HP/L
Power-to-Weight
0.13 HP/kg (7.63 kg/HP)
Power Band Window
7,000–8,500 rpm
Standover Height
765 mm (30.1 in)
Engine
Displacement155.0 ccm (9.46 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power15.2 HP (11.1 kW)) @ 8500 RPM
Torque13.8 Nm (1.4 kgf-m or 10.2 ft.lbs) @ 7000 RPM
Compression10.4:1
Bore x Stroke57.0 x 58.7 mm (2.2 x 2.3 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTCI
LubricationWet
CoolingLiquid
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchWet, Multiplate
Chassis
Frame TypeUnderbone
Front SuspensionTelescopic
Rear SuspensionSwingarm
Wheelbase1240 mm (48.8 inches)
Ground Clearance135 mm (5.3 inches)
Wheels & Brakes
Front Tyre70/90-MC17
Rear Tyre120/70-MC17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight116.0 kg (255.7 pounds)
Power/Weight0.1306 HP/kg
Seat Height765 mm (30.1 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.
