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MotoLibrary Score
36/100Commuter
Power/Weight
0.14 hp/kg
Torque
17 Nm
Engine
221 ccm
Technical Overview
2021 Um Xtreet R Technical Analysis & Specification Breakdown
Engineered by Um for the naked motorcycle segment, the 2021 Um Xtreet R utilizes a 221 cc (13.5 cu in) oil & air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 17.3 HP (12.6 kW) at 8,200 rpm while maximum torque reaches 16.5 Nm (12.2 lb-ft) at 4,600 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 78.3 HP per liter and a 3,600 rpm working window between peak torque (4,600 rpm) and peak power (8,200 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 R measures 120 kg (265 lbs) dry, translating to a power-to-weight ratio of 0.14 HP/kg (6.94 kg per horsepower). Rider ergonomics and chassis geometry center around a 806 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry.
Specific Output
78.3 HP/L
Power-to-Weight
0.14 HP/kg (6.94 kg/HP)
Power Band Window
4,600–8,200 rpm
Standover Height
806 mm (31.7 in)
Engine
Displacement221.0 ccm (13.49 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power17.3 HP (12.6 kW)) @ 8200 RPM
Torque16.5 Nm (1.7 kgf-m or 12.2 ft.lbs) @ 4600 RPM
Compression9.2:1
Bore x Stroke65.5 x 66.2 mm (2.6 x 2.6 inches)
Fuel SystemCarburettor. PZ30
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI
CoolingOil & air
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic hydraulic
Rear SuspensionHydraulic monoshock with spring
Wheelbase1410 mm (55.5 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight120.0 kg (264.6 pounds)
Power/Weight0.1440 HP/kg
Seat Height806 mm (31.7 inches) If adjustable, lowest setting.
Overall Height1100 mm (43.3 inches)
Overall Length2040 mm (80.3 inches)
Overall Width812 mm (32.0 inches)
Other
StarterElectric & kick
Color OptionsBlack, Blue, Red, Orange, Green, White
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.
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.
