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MotoLibrary Score
31/100Commuter
Power/Weight
0.04 hp/kg
Top Speed
45 km/h
Torque
3 Nm
Engine
50 ccm
Technical Overview
2014 Znen Sun 50 Technical Analysis & Specification Breakdown
Built around Znen's scooter motorcycle platform, the 2014 Znen Sun 50 pairs a 49.6 cc (3 cu in) single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 3 HP (2.2 kW) at 7,500 rpm while maximum torque reaches 3 Nm (2.2 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a 10.2:1 compression ratio.
On the scales, the Sun 50 measures 85 kg (187 lbs) dry. Rider ergonomics and chassis geometry center around a 85 mm (3.3 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,265 mm (49.8 in) wheelbase engineered for quick, flickable steering geometry. The 5.4-liter (1.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 45 km/h (28 mph).
Power Band Window
5,500–7,500 rpm
Standover Height
85 mm (3.3 in)
Engine
Displacement49.6 ccm (3.03 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power3.0 HP (2.2 kW)) @ 7500 RPM
Torque3.0 Nm (0.3 kgf-m or 2.2 ft.lbs) @ 5500 RPM
Compression10.2:1
Fuel SystemCarburettor
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Performance
Top Speed45.0 km/h (28.0 mph)
Chassis
Frame TypeSteel
Wheelbase1265 mm (49.8 inches)
Wheels & Brakes
Front Tyre3.50-10
Rear Tyre3.50-10
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight85.0 kg (187.4 pounds)
Power/Weight0.0352 HP/kg
Seat Height85 mm (3.3 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.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
