Engineered by Hyosung for the allround motorcycle segment, the 2005 Hyosung RT 125 Karion pairs a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 11.9 HP (8.7 kW) at 10,000 rpm while maximum torque reaches 9.4 Nm (6.9 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 5-speed gearbox. With a specific output of 96 HP per liter and a 3,500 rpm working window between peak torque (6,500 rpm) and peak power (10,000 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 RT 125 Karion measures 135 kg (298 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (11.34 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 9-liter (2.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 101 km/h (63 mph).
Within MotoLibrary's Hyosung archive, this model family spans 2 indexed model years from 2004 to 2005, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
96 HP/L
Power-to-Weight
0.09 HP/kg (11.34 kg/HP)
Power Band Window
6,500–10,000 rpm
Standover Height
790 mm (31.1 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.9 HP (8.7 kW)) @ 10000 RPM
Torque9.4 Nm (1.0 kgf-m or 6.9 ft.lbs) @ 6500 RPM
Compression9.9:1
Bore x Stroke57.0 x 48.8 mm (2.2 x 1.9 inches)
Valves/Cylinder4
IgnitionElectronic
CoolingAir
Transmission
Gearbox5-speed
Performance
Top Speed101.0 km/h (62.8 mph)
Chassis
Frame TypeSteel
Front SuspensionTelescopic
Front Travel160 mm (6.3 inches)
Rear SuspensionSwingarm, adjustable
Wheels & Brakes
Front Tyre130/80-18
Rear Tyre180/80-14
Front BrakesSingle disc
Front Brake Ø275 mm (10.8 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø130 mm (5.1 inches)
Dimensions & Weight
Dry Weight135.0 kg (297.6 pounds)
Power/Weight0.0884 HP/kg
Seat Height790 mm (31.1 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.
