ST 4 S

2001 Ducati ST 4 S Technical Analysis & Specification Breakdown

Engineered by Ducati for the sport touring motorcycle segment, the 2001 Ducati ST 4 S pairs a 996 cc (60.8 cu in) v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 120 HP (87.6 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 120.5 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 ST 4 S measures 212 kg (467 lbs) dry, translating to a power-to-weight ratio of 0.57 HP/kg (1.77 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, while factory top speed is listed at 250 km/h (155 mph).

Within MotoLibrary's Ducati archive, this model family spans 3 indexed model years from 2001 to 2004, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.