Ducati 400SSJunior (1991 -)

Ducati 400SSJunior (1991 -)

The Ducati 400SS Junior embodies the essence of Italian design and performance, yet with a twist that sets it apart from its larger siblings. This diminutive V-twin is essentially a downsized version of the 750SS, boasting a unique blend of agility and character.

With its 398cc Desmo engine producing a respectable 42 horsepower, the 400SS Junior delivers a smooth, creamy power delivery that’s more suited to everyday riding than outright performance. The chassis, identical to the 750SS with the exception of a shorter swingarm, provides an exceptional level of handling and poise.

Ergonomically speaking, the Ducati 400SS Junior is a masterclass in design, offering a range of seating positions that cater to various rider styles. From compact to stretched-out, the bike’s flexibility allows riders to adopt their preferred stance with ease.

As you settle into the saddle, crank up the engine and feel the unique resonance of the Desmo V-twin beneath you. The 400SS Junior may not be the most potent machine in its class, but it’s an endearing and accessible ride that embodies the spirit of Ducati – a bike that’s equal parts character, charm, and unbridled passion.

Key Specifications

Engine TypeFour stroke, 90Ltwin cylinder, SOHC, desmodromic 2 valve per cylinder.
Engine Capacity398 cc / 24.3 cu in
Max Power30.9 kw / 42 hp
Fuel Tank Capacity17 L / 4.5 US gal / 3.7 Imp gal
Seat Height29.5 inches / 750 mm
Ducati 400SSJunior (1991 -)

All Specifications

Make & Model

ModelDucati 400SSJunior
Year1991 –

Engine

Engine TypeFour stroke, 90Ltwin cylinder, SOHC, desmodromic 2 valve per cylinder.
Displacement398 cc / 24.3 cu in
Bore x Stroke70.5 x 51 mm
Compression Ratio10.0:1
Max Horsepower30.9 kw / 42 hp
Engine Management SystemMikuni B79 carburetor
Cooling SystemAir cooled

Performance

Top Speed180 km/h / 112 mph

Transmission

Gearbox6 Speed
Primary Drive Ratio2.264:1 (34/77)
Gear Ratios1 st 3.071 / 2nd 2.111 ./ 3rd 1.590 / 4th 1.280 / 5th 1.074 / 6th 0.931:1
Final DriveChain

Electrical & Electronics System

Battery12V 16Ah
StarterElectric

Chassis & Suspension

Front SuspensionMarzocchiinverted telescopic fork, 40USD/E
Rear SuspensionCantilever swingarm, Marzocchi PBS1R monoshock, preload and rebound damping

Wheels & Brakes

Front Tire Size130/60 VR17
Rear Tire Size160/60 VR17
Front BrakesSingle 320mm disc
Rear BrakesSingle 245 mm disc

Dimension & Weights

Overall Length2020 mm / 79.5 in
Overall Width730 mm / 28.7 in
Overall Height1110 mm / 43.7 in
Seat Height29.5 inches / 750 mm
Wheelbase55.5 inches / 1410 mm
Fuel Tank Capacity17 L / 4.5 US gal / 3.7 Imp gal
Dry Weight173 kg / 381 lbs

Features

  • Hydraulically damped trellis frame with stressed engine mounts
  • Extra gear compared to smaller Ducati models
  • Desmo V-twin engine design
  • 398cc displacement
  • Bump-up in compression ratio
  • Wide 17-inch wheels
  • Ultra-low profile Michelin A/M59X radials
  • Goldline Brembo brakes
  • Rearset pegs for a more aggressive riding position
  • Ergonomically designed with correct peg-to-pedal and bar-to-lever angles
  • Adjustable rearset pegs for varying rider styles
  • 1410mm wheelbase, slightly longer than the VFR
  • Non-adjustable Showa upside-down forks from the 750SS
  • Overdamped Marzocchi rear shock (replacing adjustable Showa on the 750)
  • Low seat height and comfortable riding position
  • Wide tank for easy handling and cornering clearance

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