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MotoLibrary Score
37/100Commuter
Power/Weight
0.14 hp/kg
Torque
23 Nm
Engine
250 ccm
Technical Overview
2021 Zongshen RX3 Standard Technical Analysis & Specification Breakdown
Engineered by Zongshen for the enduro - offroad motorcycle segment, the 2021 Zongshen RX3 Standard relies on a 249.6 cc (15.2 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 24.8 HP (18.1 kW) at 9,000 rpm while maximum torque reaches 22.5 Nm (16.6 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 99.4 HP per liter and a 2,000 rpm working window between peak torque (7,000 rpm) and peak power (9,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the RX3 Standard measures 175 kg (386 lbs) wet (curb), translating to a power-to-weight ratio of 0.14 HP/kg (7.06 kg per horsepower). Rider ergonomics and chassis geometry center around a 795 mm (31.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,425 mm (56.1 in) wheelbase engineered for balanced agility and highway composure. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
99.4 HP/L
Power-to-Weight
0.14 HP/kg (7.06 kg/HP)
Power Band Window
7,000–9,000 rpm
Standover Height
795 mm (31.3 in)
Engine
Displacement249.6 ccm (15.23 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power24.8 HP (18.1 kW)) @ 9000 RPM
Torque22.5 Nm (2.3 kgf-m or 16.6 ft.lbs) @ 7000 RPM
Compression11.5:1
Bore x Stroke94.5 x 64.0 mm (3.7 x 2.5 inches)
Valves/Cylinder4
Fuel SystemInjection. Delphi
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet plate
Chassis
Frame TypeSteel
Front SuspensionStandard hydraulic forks
Rear SuspensionMonoshock, non-adjustable
Wheelbase1425 mm (56.1 inches)
Ground Clearance175 mm (6.9 inches)
Wheels & Brakes
Front Tyre110/80-19
Rear Tyre170/70-18
Front BrakesSingle disc. ABS
Rear BrakesSingle disc. ABS
Dimensions & Weight
Weight incl.175.0 kg (385.8 pounds)
Seat Height795 mm (31.3 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.
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.