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MotoLibrary Score
33/100Commuter
Power
10 HP
Torque
8 Nm
Engine
125 ccm
Technical Overview
2021 Um Chill 125 Technical Analysis & Specification Breakdown
Positioned in Um's scooter motorcycle lineup, the 2021 Um Chill 125 utilizes a 124.7 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 9.7 HP (7.1 kW) at 7,500 rpm while maximum torque reaches 7.5 Nm (5.5 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a automatic gearbox. With a specific output of 77.8 HP per liter and a 1,500 rpm working window between peak torque (6,000 rpm) and peak power (7,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
Rider ergonomics and chassis geometry center around a 725 mm (28.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,330 mm (52.4 in) wheelbase engineered for quick, flickable steering geometry. The 5-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
77.8 HP/L
Power Band Window
6,000–7,500 rpm
Standover Height
725 mm (28.5 in)
Engine
Displacement124.7 ccm (7.61 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power9.7 HP (7.1 kW)) @ 7500 RPM
Torque7.5 Nm (0.8 kgf-m or 5.5 ft.lbs) @ 6000 RPM
Compression9.2:1
Fuel SystemCarburettor. Mikuni EFI
IgnitionECU
CoolingAir
Transmission
GearboxAutomatic
Performance
Emission DetailsEuro IV
Chassis
Front SuspensionTelescopic fork
Rear SuspensionDouble Shock Absorber
Wheelbase1330 mm (52.4 inches)
Wheels & Brakes
Front Tyre110/70-12
Rear Tyre120/70-12
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Seat Height725 mm (28.5 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.
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.
