Engineered by Hyosung for the naked motorcycle segment, the 2005 Hyosung GT 250 relies on a 249 cc (15.2 cu in) v2, four-stroke powerplant. In factory specification, peak output is rated at 27.5 HP (20.1 kW) at 10,250 rpm while maximum torque reaches 21 Nm (15.5 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox. With a specific output of 110.4 HP per liter and a 2,750 rpm working window between peak torque (7,500 rpm) and peak power (10,250 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 250 measures 155 kg (342 lbs) dry, translating to a power-to-weight ratio of 0.18 HP/kg (5.64 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, while factory top speed is listed at 140 km/h (87 mph).
Within MotoLibrary's Hyosung archive, this model family spans 3 indexed model years from 2005 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
110.4 HP/L
Power-to-Weight
0.18 HP/kg (5.64 kg/HP)
Power Band Window
7,500–10,250 rpm
Standover Height
795 mm (31.3 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power27.5 HP (20.1 kW)) @ 10250 RPM
Torque21.0 Nm (2.1 kgf-m or 15.5 ft.lbs) @ 7500 RPM
Compression10.2:1
Bore x Stroke57.0 x 48.8 mm (2.2 x 1.9 inches)
Valves/Cylinder4
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionElectronic
Transmission
Gearbox5-speed
Performance
Top Speed140.0 km/h (87.0 mph)
Chassis
Front SuspensionTelescopic
Front Travel120 mm (4.7 inches)
Rear SuspensionSwingarm
Rear Travel110 mm (4.3 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre150/70-17
Front BrakesSingle disc
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc
Rear Brake Ø230 mm (9.1 inches)
Dimensions & Weight
Dry Weight155.0 kg (341.7 pounds)
Power/Weight0.1774 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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
