Positioned in Ducati's sport touring motorcycle lineup, the 2003 Ducati ST4S pairs a 996 cc (60.8 cu in) liquid-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 117 HP (85.4 kW) at 8,750 rpm while maximum torque reaches 98 Nm (72.3 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 117.5 HP per liter and a 1,750 rpm working window between peak torque (7,000 rpm) and peak power (8,750 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 ST4S measures 212 kg (467 lbs) dry, translating to a power-to-weight ratio of 0.55 HP/kg (1.81 kg per horsepower). Rider ergonomics and chassis geometry center around a 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,430 mm (56.3 in) wheelbase engineered for balanced agility and highway composure. The 21-liter (5.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
117.5 HP/L
Power-to-Weight
0.55 HP/kg (1.81 kg/HP)
Power Band Window
7,000–8,750 rpm
Standover Height
820 mm (32.3 in)
Engine
Displacement996.0 ccm (60.78 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power117.0 HP (85.4 kW)) @ 8750 RPM
Torque98.0 Nm (10.0 kgf-m or 72.3 ft.lbs) @ 7000 RPM
Compression11.5:1
Bore x Stroke98.0 x 66.0 mm (3.9 x 2.6 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDesmodromic valve control
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Front Travel130 mm (5.1 inches)
Rear Travel148 mm (5.8 inches)
Wheelbase1430 mm (56.3 inches)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre180/55-ZR17
Front BrakesDouble disc
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc
Rear Brake Ø245 mm (9.6 inches)
Dimensions & Weight
Dry Weight212.0 kg (467.4 pounds)
Power/Weight0.5519 HP/kg
Seat Height820 mm (32.3 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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
