At the heart of the 2009 Hyosung GT 125 naked motorcycle, Hyosung utilizes a 124.5 cc (7.6 cu in) oil & air-cooled v2, four-stroke layout. In factory specification, peak output is rated at 14.2 HP (10.4 kW), transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 114.1 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 GT 125 measures 166 kg (366 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (11.69 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 1,455 mm (57.3 in) wheelbase engineered for balanced agility and highway composure. 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
114.1 HP/L
Power-to-Weight
0.09 HP/kg (11.69 kg/HP)
Standover Height
795 mm (31.3 in)
Engine
Displacement124.5 ccm (7.60 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power14.2 HP (10.4 kW))
Valves/Cylinder4
Fuel SystemCarburettor. BDS26
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingOil & air
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic
Rear SuspensionSwing Arm
Wheelbase1455 mm (57.3 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre110/70-H17
Rear Tyre150/70-H17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight166.0 kg (366.0 pounds)
Power/Weight0.0855 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.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
