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MotoLibrary Score
38/100Commuter
Power
12 HP
Top Speed
127 km/h
Torque
9 Nm
Engine
124 ccm
Technical Overview
2021 Um Max 125 XL Technical Analysis & Specification Breakdown
Positioned in Um's allround motorcycle lineup, the 2021 Um Max 125 XL utilizes a 123.7 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 12 HP (8.8 kW) at 8,456 rpm while maximum torque reaches 9.4 Nm (6.9 lb-ft) at 8,456 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 97 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
Rider ergonomics and chassis geometry center around a 805 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,310 mm (51.6 in) wheelbase engineered for quick, flickable steering geometry. The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 127 km/h (79 mph).
Specific Output
97 HP/L
Standover Height
805 mm (31.7 in)
Engine
Displacement123.7 ccm (7.55 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power12.0 HP (8.8 kW)) @ 8456 RPM
Torque9.4 Nm (1.0 kgf-m or 6.9 ft.lbs) @ 8456 RPM
Compression10.0:1
Bore x Stroke54.0 x 44.0 mm (2.1 x 1.7 inches)
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Top Speed126.6 km/h (78.7 mph)
Chassis
Front SuspensionTelescopic Fork
Rear SuspensionSwingarm with dual spring shock absorbers
Wheelbase1310 mm (51.6 inches)
Wheels & Brakes
Front Tyre2.75-18
Rear Tyre90/90-18
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Seat Height805 mm (31.7 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.
