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MotoLibrary Score
34/100Commuter
Power/Weight
0.09 hp/kg
Torque
11 Nm
Engine
137 ccm
Technical Overview
2021 Um Xtreet 140 R Technical Analysis & Specification Breakdown
At the heart of the 2021 Um Xtreet 140 R sport motorcycle, Um pairs a 137 cc (8.4 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 10.7 HP (7.8 kW) at 8,000 rpm while maximum torque reaches 10.5 Nm (7.7 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 78.1 HP per liter and a 2,000 rpm working window between peak torque (6,000 rpm) and peak power (8,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Xtreet 140 R measures 122 kg (269 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (11.4 kg per horsepower). Rider ergonomics and chassis geometry center around a 870 mm (34.3 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,350 mm (53.1 in) wheelbase engineered for quick, flickable steering geometry. The 15.5-liter (4.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
78.1 HP/L
Power-to-Weight
0.09 HP/kg (11.4 kg/HP)
Power Band Window
6,000–8,000 rpm
Standover Height
870 mm (34.3 in)
Engine
Displacement137.0 ccm (8.36 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power10.7 HP (7.8 kW)) @ 8000 RPM
Torque10.5 Nm (1.1 kgf-m or 7.7 ft.lbs) @ 6000 RPM
Compression10.0:1
Bore x Stroke57.0 x 54.0 mm (2.2 x 2.1 inches)
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionHydraulic Telescopic
Rear Suspension2 hydraulic shocks with gas
Wheelbase1350 mm (53.1 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight122.0 kg (269.0 pounds)
Power/Weight0.0877 HP/kg
Seat Height870 mm (34.3 inches) If adjustable, lowest setting.
Overall Height1000 mm (39.4 inches)
Overall Length2000 mm (78.7 inches)
Fuel Capacity15.50 litres (4.10 US gallons)
Other
StarterElectric & kick
Color OptionsBlack, Blue, Red, Orange, White, Green
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.
