2025 Sym SYMNH T 125 Technical Analysis & Specification Breakdown
Engineered by Sym for the allround motorcycle segment, the 2025 Sym SYMNH T 125 utilizes a 124.1 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 12.5 HP (9.1 kW) at 7,500 rpm while maximum torque reaches 8 Nm (5.9 lb-ft) at 9,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 100.7 HP per liter, 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 SYMNH T 125 measures 150 kg (331 lbs) wet (curb), translating to a power-to-weight ratio of 0.08 HP/kg (12 kg per horsepower). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,405 mm (55.3 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 4 indexed model years from 2020 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
100.7 HP/L
Power-to-Weight
0.08 HP/kg (12 kg/HP)
Standover Height
810 mm (31.9 in)
Engine
Displacement124.1 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power12.5 HP (9.1 kW)) @ 7500 RPM
Torque8.0 Nm (0.8 kgf-m or 5.9 ft.lbs) @ 9000 RPM
Bore x Stroke56.5 x 49.5 mm (2.2 x 1.9 inches)
Fuel SystemInjection
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Emission DetailsEuro 5
Chassis
Front SuspensionTelescopic Fork
Rear SuspensionMono Shock
Wheelbase1405 mm (55.3 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre130/80-17
Front BrakesSingle disc. ABS.
Front Brake Ø288 mm (11.3 inches)
Rear BrakesSingle disc. ABS.
Rear Brake Ø222 mm (8.7 inches)
WheelsCast aluminium
Dimensions & Weight
Weight incl.150.0 kg (330.7 pounds)
Seat Height810 mm (31.9 inches) If adjustable, lowest setting.
Overall Height1195 mm (47.0 inches)
Overall Length2068 mm (81.4 inches)
Overall Width860 mm (33.9 inches)
Fuel Capacity11.00 litres (2.91 US gallons)
Other
StarterElectric
Color OptionsBlack, Red
InstrumentsLCD dashboard
LightLED lights
Notes
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.
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.
