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MotoLibrary Score
35/100Commuter
Power/Weight
0.07 hp/kg
Top Speed
80 km/h
Engine
125 ccm
Technical Overview
2021 Um Powermax 125 Technical Analysis & Specification Breakdown
At the heart of the 2021 Um Powermax 125 scooter motorcycle, Um relies on a 124.6 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 7 HP (5.1 kW) at 7,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 56.2 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Powermax 125 measures 102 kg (225 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (14.57 kg per horsepower). 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).
Specific Output
56.2 HP/L
Power-to-Weight
0.07 HP/kg (14.57 kg/HP)
Standover Height
720 mm (28.3 in)
Engine
Displacement124.6 ccm (7.60 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power7.0 HP (5.1 kW)) @ 7000 RPM
Compression9.2:1
Bore x Stroke52.4 x 57.8 mm (2.1 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
Dry Weight102.0 kg (224.9 pounds)
Power/Weight0.0683 HP/kg
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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
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.
