| MODEL | DUCATI 999S 2003 |
| Year | 2003 |
| Engine Type | 4-stroke, 90° L-twin, DOHC, desmodromic 4 valves per cylinder, belt driven |
| Displacement / Capacity | 998 cc / 60.9 cu in |
| Bore X Stroke | 100 x 63.5 mm |
| Compression Ratio | 11.4:1 |
| Cooling System | Liquid cooled |
| Max Power | 100 kW / 136 hp @ 9750 rpm |
| Max Torque | 106 Nm / 78.1 ft-lb @ 8000 rpm |
| Ignition | Marelli electronic |
| Induction | Weber Marelli electronic fuel injection, 54 mm throttle body |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6 speed |
| Clutch | Dry multiplate, hydraulically operated |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Tubular steel trellis |
| Front Suspension | Öhlins 43 mm upside-down fork, fully adjustable, TiN surface treatment |
| Rear Suspension | Progressive linkage, fully adjustable Öhlins monoshock |
| Front Brakes | 2 x 320 mm discs, 4-piston calipers |
| Rear Brakes | Single 245 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2095 mm / 82.5 in |
| Overall Width | 730 mm / 28.7 in |
| Overall Height | 1090 mm / 42.9 in |
| Seat Height | 780 mm / 30.7 in |
| Wheelbase | 1420 mm / 55.9 in |
| Ground Clearance | — |
| Dry Weight | 199 kg / 438 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 ZR17 |
| Rear Tyre | 190/50 ZR17 |
| FUEL SYSTEM | |
| Fuel Capacity | 15.5 Litres / 4.1 US gal |
| Fuel Consumption | 5.56 L/100 km / 42.3 US mpg |
| Top Speed | 270 km/h / 168 mph |
The 999S is the upgraded version of the standard 999, adding fully adjustable Öhlins suspension and engine changes worth roughly 12 hp (136 hp). Visually close to the base bike, it feels more polished, with easy turn-in, strong Brembo brakes and punchy power delivery. Reviewers rated it very highly on the road, though town riding suffered from heat from the under-seat catalytic converter.
