| MODEL | DUCATI 900SS 1999 |
| Year | 1999 |
| Engine Type | Four stroke, 90° V-twin (L-twin), SOHC, desmodromic, 2 valves per cylinder, belt driven |
| Displacement / Capacity | 904 cc / 55.2 cu in |
| Bore X Stroke | 92 x 68 mm / 3.62 x 2.68 in |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Max Power | 58.3 kW / 80 hp @ 7500 rpm |
| Max Torque | 77.2 Nm / 57 ft-lb @ 6500 rpm |
| Ignition | Kokusan electronic inductive discharge |
| Induction | Weber Marelli electronic fuel injection, one injector per cylinder |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | Dry, multiplate |
| Final Drive | Chain, 2.666:1 |
| CHASSIS SPECS | |
| Frame | Tubular chrome-moly steel trellis |
| Front Suspension | 43 mm Showa GD 131 inverted fork, adjustable preload, compression and rebound, 120 mm / 4.7 in travel |
| Rear Suspension | Showa GD 132 progressive-linkage monoshock, adjustable preload, compression and rebound, 136 mm / 5.4 in travel |
| Front Brakes | 2 x 320 mm discs, 4-piston calipers |
| Rear Brakes | Single 245 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2030 mm / 79.9 in |
| Overall Width | 780 mm / 30.7 in |
| Overall Height | 1125 mm / 44.3 in |
| Seat Height | 800 mm / 31.5 in |
| Wheelbase | 1395 mm / 54.9 in |
| Ground Clearance | — |
| Dry Weight | 188 kg / 414 lbs |
| Wet Weight | 197 kg / 434 lbs |
| WHEEL SPECS | |
| Front Tyre | 120/70 ZR17 |
| Rear Tyre | 170/60 ZR17 |
| FUEL SYSTEM | |
| Fuel Capacity | 16 Litres / 4.2 US gal (4 L reserve) |
| Fuel Consumption | 5.5 L/100 km / 42.8 US mpg |
| Top Speed | 230.8 km/h / 143.4 mph |
The 1998 SS redesign by Pierre Terblanche brought a full fairing, fuel injection, ST2-derived Showa suspension and Brembo brakes. For 1999 the bike received new graphics, Brembo wheels, higher bars, a taller screen and an aluminium swingarm. It gives up some peak power for strong low-rev torque and a light, narrow chassis.
