Positioned in Hyosung's custom - cruiser motorcycle lineup, the 2006 Hyosung Aquila 650 features a 647 cc (39.5 cu in) v2, four-stroke configuration. In factory specification, peak output is rated at 69.7 HP (50.9 kW) at 9,000 rpm while maximum torque reaches 62 Nm (45.7 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox. With a specific output of 107.7 HP per liter and a 2,000 rpm working window between peak torque (7,000 rpm) and peak power (9,000 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 Aquila 650 measures 230 kg (507 lbs) dry, translating to a power-to-weight ratio of 0.3 HP/kg (3.3 kg per horsepower). Rider ergonomics and chassis geometry center around a 690 mm (27.2 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 195 km/h (121 mph).
Specific Output
107.7 HP/L
Power-to-Weight
0.3 HP/kg (3.3 kg/HP)
Power Band Window
7,000–9,000 rpm
Standover Height
690 mm (27.2 in)
Engine
Displacement647.0 ccm (39.48 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power69.7 HP (50.9 kW)) @ 9000 RPM
Torque62.0 Nm (6.3 kgf-m or 45.7 ft.lbs) @ 7000 RPM
Compression11.6:1
Bore x Stroke81.5 x 62.0 mm (3.2 x 2.4 inches)
Valves/Cylinder4
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
Transmission
Gearbox5-speed
Performance
Top Speed195.0 km/h (121.2 mph)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre180/55-ZR17
Front BrakesDouble disc
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc
Rear Brake Ø270 mm (10.6 inches)
Dimensions & Weight
Dry Weight230.0 kg (507.1 pounds)
Power/Weight0.3032 HP/kg
Seat Height690 mm (27.2 inches) If adjustable, lowest setting.
Fuel Capacity16.00 litres (4.23 US gallons)
Other
StarterElectric
Color OptionsMidnight black, Titanium silver, Sky blue
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.
