Ducati ST4 (1997 – 98)

Ducat ST4 (1997 - 98)

The Ducati ST4 marks a significant upgrade to the sports touring range, addressing criticisms of its predecessor’s lackluster top-end power.

Key to this new machine is the 916cc eight-valve desmodromic engine, which delivers exceptional strength and refinement. Its installation in the ST2 chassis and bodywork has resulted in a formidable combination of performance and handling.

On the road, the ST4 proves itself a capable sports tourer, boasting a robust engine that enables all-day high-speed cruising, while its sporty handling makes short work of twisty back roads. Brembo brakes and sharp steering further enhance its track-ready credentials.

With its comprehensive instrument cluster, decent weather protection, and optional factory hard luggage, living with the Ducati ST4 is an uncomplicated experience, ensuring a seamless blend of comfort and performance.

Key Specifications

Engine TypeFour stroke, 90 L twin cylinder, DOHC, desmodromic 4 valves per cylinder
Engine Capacity916 cc / 55.9 cu in
Max Power78.7 kw / 107 hp
Max Torque89 Nm / 9 kgf-m / 65.6 ft-lb @ 7500 rpm
Fuel Tank Capacity5.5 US gallons / 21.0 L
Seat Height32.3 inches / 820 mm
Ducat ST4 (1997 - 98)

All Specifications

Make & Model

ModelDucat ST4
Year1997 – 98

Engine

Engine TypeFour stroke, 90 L twin cylinder, DOHC, desmodromic 4 valves per cylinder
Displacement916 cc / 55.9 cu in
Bore x Stroke94 x 66 mm
Compression Ratio11.0:1
Max Horsepower78.7 kw / 107 hp
Max Torque89 Nm / 9 kgf-m / 65.6 ft-lb @ 7500 rpm
Engine Management SystemFuel injection, 50 mm throttle body, Marelli 1.6M
Lubrication SystemWet sump
Cooling SystemLiquid cooled
Exhaust2 aluminum mufflers with catalytic converter (non-catalytic on USA version)

Performance

Top Speed251 km/h / 156 mph

Transmission

ClutchHydraulically actuated dry multiplate clutch
Gearbox6 Speed
Primary Drive Ratio1.84:1 (32/59)
Gear Ratios1st 2.466 / 2nd 1.765 / 3rd 1.350 / 4th 1.091 / 5th 0.958 / 6th 0.857:1
Final DriveChain

Electrical & Electronics System

Battery12V 16Ah
StarterElectric

Chassis & Suspension

Frame TypeSteel, Trellis frame
Front SuspensionShowa GD081 43mm upside-down fully adjustable fork.
Front Suspension Travel5.1 inches / 130 mm
Rear SuspensionProgressive linkage with fully adjustable Showa GD082 monoshock with piggy back aluminum swing arm.
Rear Suspension Travel5.8 inches / 148 mm

Wheels & Brakes

Front Tire Size120/70 – ZR17
Rear Tire Size180/55 – ZR17
Front Brakes2x 320 mm Discs, 4 piston calipers
Rear BrakesSingle 245 mm disc, 2 piston caliper

Dimension & Weights

Overall Length2070 mm / 81.5 in
Overall Width910 mm / 35.8 in
Overall Height1180 mm / 46.5 in
Seat Height32.3 inches / 820 mm
Wheelbase56.3 inches / 1430 mm
Fuel Tank Capacity5.5 US gallons / 21.0 L
Dry Weight214.5 kg / 474 lbs

Features

  • Four-stroke 90 L twin cylinder engine
  • DOHC desmodromic 4 valves per cylinder design
  • 916cc eight-valve desmodromic engine option
  • Steel-tube trellis frame
  • Showa upside-down front forks
  • Showa rear shock absorber
  • Wider rear wheel with 180-section tyre
  • Larger 21-litre (4.6 gal) fuel tank
  • Brembo brakes
  • Comprehensive instrument cluster with LCD screen and clock
  • Fuel gauge on the dashboard
  • Optional factory hard luggage available
  • Adjustable exhausts for increased ground clearance
  • Sporty handling and sharp steering
Ducat ST4 (1997 - 98)
Ducat ST4 (1997 - 98)
Ducat ST4 (1997 - 98)
Ducat ST4 (1997 - 98)

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