Ducati 400SS (1991-98)

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The Ducati 400SS Junior (Half Fairing) was produced from 1991 to 1998. It had a four stroke, 90 degrees L twin cylinder engine with desmodromic 2 valve per cylinder and a capacity of 398 cc. The compression ratio was 10.0:1 and it was air cooled with a Mikuni B79 carburetor. The ignition was Kokusan electronic and it had a 12V 16Ah battery with an electric starting system. The motorcycle had a maximum power of 30.9 kW / 42 hp at 10000 rpm and a maximum torque of 35.2 Nm / 3.6 kgf-m / 26 ft-lb at 8500 rpm.

The transmission was a 6 speed with a primary drive ratio of 2.264:1 (34/77) and the final drive ratio was 3.210:1 (14/45) with a chain final drive. It had Marzocchi inverted telescopic fork as the front suspension and a cantilever swingarm with Marzocchi PBS1R monoshock, preload and rebound damping as the rear suspension. The front brakes were a single 320 mm disc and the rear brakes were a single 245 mm disc.

The dimensions of the motorcycle were length 2020 mm / 79.5 in, width 730 mm / 28.7 in, height 1110 mm / 43.7 in, wheelbase 1410 mm / 55.5 in, and seat height 750 mm / 29.5 in. The dry weight of the motorcycle was 173 kg / 381 lbs and it had a fuel capacity of 17 L / 4.5 US gal / 3.7 Imp gal. The motorcycle had a standing 1/4 mile time of 14.7 seconds and a top speed of 180 km/h / 112 mph.

Technical specifications:

Make Model: Ducati 400SS Junior (Half Fairing)

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
Standing 1/4 Mile: 14.7 sec
Top Speed: 180 km/h / 112 mph

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