At the heart of the 2014 Hyosung ST7 Deluxe custom - cruiser motorcycle, Hyosung features a 678.2 cc (41.4 cu in) liquid-cooled v2, four-stroke configuration. In factory specification, peak output is rated at 79 HP (57.7 kW) at 9,000 rpm while maximum torque reaches 67 Nm (49.4 lb-ft) at 7,250 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 116.5 HP per liter and a 1,750 rpm working window between peak torque (7,250 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 ST7 Deluxe measures 244 kg (538 lbs) dry, translating to a power-to-weight ratio of 0.32 HP/kg (3.09 kg per horsepower). Rider ergonomics and chassis geometry center around a 675 mm (26.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,690 mm (66.5 in) wheelbase engineered for planted straight-line stability. The 17.03-liter (4.5 US gal) fuel tank paired with a rated consumption of 4.13 L/100 km provides an estimated theoretical range of roughly 412 km (256 miles) between fill-ups.
Within MotoLibrary's Hyosung archive, this model family spans 3 indexed model years from 2013 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
116.5 HP/L
Power-to-Weight
0.32 HP/kg (3.09 kg/HP)
Power Band Window
7,250–9,000 rpm
Theoretical Range
~412 km (256 mi)
Engine
Displacement678.2 ccm (41.38 cubic inches)
Engine TypeV2, four-stroke
Engine Details90° V-twin
Power79.0 HP (57.7 kW)) @ 9000 RPM
Torque67.0 Nm (6.8 kgf-m or 49.4 ft.lbs) @ 7250 RPM
Compression11.5:1
Bore x Stroke81.5 x 65.0 mm (3.2 x 2.6 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
LubricationWet sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchWet, Multiplate
DrivelineConstant mesh
Performance
Fuel Consumption4.13 litres/100 km (24.2 km/l or 56.95 mpg)
Greenhouse Gases95.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Front SuspensionConventional Telescopic fork
Rear SuspensionSwing arm with Hydraulic Double shock absorber (Preload adjustable)
Wheelbase1690 mm (66.5 inches)
Wheels & Brakes
Front Tyre120/80-16
Rear Tyre170/80-15
Front BrakesDouble disc. Semi floating single disc, 4 pistons caliper
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc. 2 pistons caliper
Rear Brake Ø270 mm (10.6 inches)
Dimensions & Weight
Dry Weight244.0 kg (538.0 pounds)
Power/Weight0.3237 HP/kg
Seat Height675 mm (26.6 inches) If adjustable, lowest setting.
Overall Height1135 mm (44.7 inches)
Overall Length2470 mm (97.2 inches)
Overall Width960 mm (37.8 inches)
Fuel Capacity17.03 litres (4.50 US gallons)
Other
StarterElectric
Color OptionsBlack, red, white
Carrying CapacitySaddle bags
Warranty2 Year Limited, 1st year parts and labor, 2nd year parts
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.
