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MotoLibrary Score
36/100Commuter
Top Speed
80 km/h
Engine
150 ccm
Technical Overview
2021 Um Powermax 150 Technical Analysis & Specification Breakdown
Positioned in Um's scooter motorcycle lineup, the 2021 Um Powermax 150 relies on a 149.6 cc (9.1 cu in) air-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 57.4 x 57.8 mm (2.3 x 2.3 inches) with a 9.2:1 compression ratio.
Rider ergonomics and chassis geometry center around a 720 mm (28.3 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,280 mm (50.4 in) wheelbase engineered for quick, flickable steering geometry. The 6.06-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 80 km/h (50 mph).
Standover Height
720 mm (28.3 in)
Engine
Displacement149.6 ccm (9.13 cubic inches)
Engine TypeSingle cylinder, four-stroke
Compression9.2:1
Bore x Stroke57.4 x 57.8 mm (2.3 x 2.3 inches)
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionC.D.I
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Performance
Top Speed80.0 km/h (49.7 mph)
Emission DetailsEuro IV
Chassis
Front SuspensionHydraulic Telescopic
Rear SuspensionSingle Hydraulic Shock
Wheelbase1280 mm (50.4 inches)
Ground Clearance110 mm (4.3 inches)
Wheels & Brakes
Front Tyre90/90-12
Rear Tyre3.5-10
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Seat Height720 mm (28.3 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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
