2024 Sym SYMNH X 125 Technical Analysis & Specification Breakdown
At the heart of the 2024 Sym SYMNH X 125 naked motorcycle, Sym relies on a 124.1 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 10.7 HP (7.8 kW) at 9,000 rpm while maximum torque reaches 9.3 Nm (6.9 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 86.2 HP per liter and a 1,500 rpm working window between peak torque (7,500 rpm) and peak power (9,000 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 SYMNH X 125 measures 143 kg (315 lbs) wet (curb), translating to a power-to-weight ratio of 0.07 HP/kg (13.36 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,400 mm (55.1 in) wheelbase engineered for quick, flickable steering geometry. The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Sym archive, this model family spans 5 indexed model years from 2020 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
86.2 HP/L
Power-to-Weight
0.07 HP/kg (13.36 kg/HP)
Power Band Window
7,500–9,000 rpm
Engine
Displacement124.1 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power10.7 HP (7.8 kW)) @ 9000 RPM
Torque9.3 Nm (0.9 kgf-m or 6.9 ft.lbs) @ 7500 RPM
Fuel SystemInjection
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Emission DetailsEuro 5
Chassis
Front SuspensionTelescope fork
Rear SuspensionMono Shock
Wheelbase1400 mm (55.1 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Front BrakesSingle disc. ABS.
Front Brake Ø288 mm (11.3 inches)
Rear BrakesSingle disc. ABS.
Rear Brake Ø222 mm (8.7 inches)
Dimensions & Weight
Weight incl.143.0 kg (315.3 pounds)
Overall Height1080 mm (42.5 inches)
Overall Length2040 mm (80.3 inches)
Overall Width745 mm (29.3 inches)
Fuel Capacity11.00 litres (2.91 US gallons)
Other
StarterElectric
Color OptionsBlue, grey, white
InstrumentsLCD dashboard
LightLED lights
Notes
USD. SYM motorcycles are produced by Sanyang Motor in Taiwan.
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.
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.
