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Enduro - Offroad · 2021

RX3 Standard

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MotoLibrary Score
37 /100 Commuter
Power/Weight
0.14 hp/kg
Torque
23 Nm
Engine
250 ccm

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
Displacement 249.6 ccm (15.23 cubic inches)
Engine Type Single cylinder, four-stroke
Power 24.8 HP (18.1 kW)) @ 9000 RPM
Torque 22.5 Nm (2.3 kgf-m or 16.6 ft.lbs) @ 7000 RPM
Compression 11.5:1
Bore x Stroke 94.5 x 64.0 mm (3.7 x 2.5 inches)
Valves/Cylinder 4
Fuel System Injection. Delphi
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Clutch Wet plate
Chassis
Frame Type Steel
Front Suspension Standard hydraulic forks
Rear Suspension Monoshock, non-adjustable
Wheelbase 1425 mm (56.1 inches)
Ground Clearance 175 mm (6.9 inches)
Wheels & Brakes
Front Tyre 110/80-19
Rear Tyre 170/70-18
Front Brakes Single disc. ABS
Rear Brakes Single disc. ABS
Dimensions & Weight
Weight incl. 175.0 kg (385.8 pounds)
Seat Height 795 mm (31.3 inches) If adjustable, lowest setting.
Overall Height 1260 mm (49.6 inches)
Overall Length 2130 mm (83.9 inches)
Overall Width 868 mm (34.2 inches)
Fuel Capacity 16.00 litres (4.23 US gallons)
Oil Capacity 0.90 litres (0.95 US quarts)
Other
Starter Electric
Color Options Blue, white, orange, red
Light LED headlight
Carrying Capacity Saddle bags, top box
Notes

Small windscreen. Chinese bike.

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Buying Checklist

Before You Compare This Bike

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
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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.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🌲
Best For
Off-Road & Adventure
📏
Seat Height
79.5 cm / 31.3 in
⚖️
Handling
Manageable weight for most riders
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