The Ducati 400SS Junior motorcycle was produced from 1991 to 1998. It has a four-stroke, 90-degree L twin-cylinder, SOHC, desmodromic 2-valve per cylinder engine with a capacity of 398cc. The compression ratio is 10:1 with a Mikuni B79 carburetor for induction. The bike has a max power of 30.9 kW/42 hp at 10,000 rpm and a max torque of 35.2 Nm/3.6 kgf-m/26 ft-lb at 8,500 rpm. It has a 6-speed transmission with a primary drive ratio of 2.264:1 and a final drive ratio of 3.210:1 with a chain final drive. The Marzocchi inverted telescopic fork, 40USD/E, is used for front suspension and the Cantilever swingarm, Marzocchi PBS1R monoshock, and preload and rebound damping are used for rear suspension. The bike has a single 320mm disc for front brakes and a single 245mm disc for the rear. The front tire is 130/60 VR17 and the rear tire is 160/60 VR17. The bike has a length of 2020mm/79.5in, a width of 730mm/28.7in, a height of 1110mm/43.7in, a wheelbase of 1410mm/55.5in, and a seat height of 750mm/29.5in. The dry weight of the bike is 173 kg/381 lbs and has a fuel capacity of 17L/4.5 US gal/3.7 Imp gal. The bike has a top speed of 180 km/h/112 mph.
Technical specifications:
Make Model: Ducati 400SS Junior
| Year | 1991 – 98 |
|---|---|
| Engine | Four stroke, 90 degrees L twin cylinder, SOHC, desmodromic 2 valve per cylinder. |
| Capacity | 398 cc / 24.3 cu in |
| Bore x Stroke | 70.5 x 51 mm |
| Compression Ratio | 10.0:1 |
| Cooling System | Air cooled |
| Induction | Mikuni B79 carburetor |
| Spark Plugs | Champion L82YC (from 1994: RL82Y) |
| Ignition | Kokusan electronic |
| Battery | 12V 16Ah |
| Starting | Electric |
| Max Power | 30.9 kW / 42 hp @ 10000 rpm |
| Max Torque | 35.2 Nm / 3.6 kgf-m / 26 ft-lb @ 8500 rpm |
| Transmission | 6 Speed |
| Primary Drive Ratio | 2.264:1 (34/77) |
| Gear Ratios | 1 st 3.071 / 2nd 2.111 ./ 3rd 1.590 / 4th 1.280 / 5th 1.074 / 6th 0.931:1 |
| Final Drive Ratio | 3.210:1 (14/45) |
| Final Drive | Chain |
| Front Suspension | Marzocchi inverted telescopic fork, 40USD/E |
| Rear Suspension | Cantilever swingarm, Marzocchi PBS1R monoshock, preload and rebound damping |
| Front Brakes | Single 320 mm disc |
| Rear Brakes | Single 245 mm disc |
| Front Tyre | 130/60 VR17 |
| Rear Tyre | 160/60 VR17 |
| Dimensions | Length: 2020 mm / 79.5 in Width: 730 mm / 28.7 in Height: 1110 mm / 43.7 in |
| Wheelbase | 1410 mm / 55.5 in |
| Seat Height | 750 mm / 29.5 in |
| Dry Weight | 173 kg / 381 lbs |
| Fuel Capacity | 17 L / 4.5 US gal / 3.7 Imp gal |
| Top Speed | 180 km/h / 112 mph |
