Positioned in Hyosung's sport motorcycle lineup, the 2006 Hyosung GT 125 relies on a 125 cc (7.6 cu in) oil & air-cooled v2, four-stroke powerplant. In factory specification, peak output is rated at 14.2 HP (10.4 kW) at 10,500 rpm while maximum torque reaches 9.7 Nm (7.2 lb-ft) at 10,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 113.6 HP per liter and a 500 rpm working window between peak torque (10,000 rpm) and peak power (10,500 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 GT 125 measures 150 kg (331 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.56 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. The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Hyosung archive, this model family spans 2 indexed model years from 2006 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
113.6 HP/L
Power-to-Weight
0.09 HP/kg (10.56 kg/HP)
Power Band Window
10,000–10,500 rpm
Standover Height
795 mm (31.3 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power14.2 HP (10.4 kW)) @ 10500 RPM
Torque9.7 Nm (1.0 kgf-m or 7.2 ft.lbs) @ 10000 RPM
Compression11.2:1
Bore x Stroke44.0 x 41.0 mm (1.7 x 1.6 inches)
Valves/Cylinder4
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingOil & air
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Wheels & Brakes
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight150.0 kg (330.7 pounds)
Power/Weight0.0947 HP/kg
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.
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.
