Ducati 900 S2 (1984)

Ducati 900 S2 (1984)

The Ducati 900 S2 is a testament to ingenuity in the face of adversity. Launched in 1982 as a direct replacement for the iconic 900 SS, this bike had to overcome significant challenges to prove itself.

With its four-stroke, 90L twin-cylinder engine featuring bevel gear-driven SOHC and 2 valves per cylinder, the S2 boasts an impressive power-to-weight ratio. Its handling is exceptional, thanks in part to sharing a frame with the Mike Hailwood Replica Ducatis.

Despite being built during a difficult financial period for Ducati, when R&D was severely curtailed due to surging Japanese competition and stringent emissions regulations, the S2’s transmission and handling have earned it a loyal following. With its potential for power upgrades through exhaust and carburettor modifications, this bike has become a cult classic among enthusiasts.

The result of these challenges is a highly capable machine that not only met but exceeded expectations, making the Ducati 900 S2 an unforgettable riding experience.

Key Specifications

Engine TypeFour stroke, 90Ltwin cylinder, SOHC, 2 valves per cylinder, bevel gear driven
Engine Capacity864 cc / 52.7 cu in
Max Power58.8 kw / 80 hp
Max Torque86 Nm / 8.8 kgf-m / 63.5 ft-lb @ 5800 rpm
Fuel Tank Capacity18 L / 4.8 US gal / 4.0 Imp gal
Seat Height33.1 inches / 840 mm
Ducati 900 S2 (1984)

All Specifications

Make & Model

ModelDucati 900 S2
Year1984

Engine

Engine TypeFour stroke, 90Ltwin cylinder, SOHC, 2 valves per cylinder, bevel gear driven
Displacement864 cc / 52.7 cu in
Bore x Stroke86 x 74.4 mm
Compression Ratio9.3:1
Max Horsepower58.8 kw / 80 hp
Max Torque86 Nm / 8.8 kgf-m / 63.5 ft-lb @ 5800 rpm
Engine Management System2 x Dell’Orto PHF 30A or PHM 40B carburetors /32mm Dell’Orto PHF
Cooling SystemAir cooled
ExhaustThere are country specific carb & exhaust pairnigs.Switzerland and France: 32PHF carb and Silentium MufflersItaly; 40 PHM carb and Conti mufflers

Performance

Top Speed205 km/h / 127mph

Transmission

ClutchWet, multiplate
Gearbox5 Speed
Primary Drive Ratio2.187:1 (32/70)
Gear Ratios1st 2.237 / 2nd 1.562 / 3rd 1.203 / 4th 1.000 / 5th 0.887
Final DriveChain

Electrical & Electronics System

BatteryYuasa 19Ah
StarterElectric

Chassis & Suspension

Front Suspension38 mm Marzocchi telescopic fork
Rear SuspensionMarzocchi ET85 dual shocks, 5-way adjustable

Wheels & Brakes

Front Wheel/Rim Size100/90 – V18
Rear Wheel/Rim Size120/90 – V18
Front Brakes2 x 280 mm Disc, 1 piston caliper
Rear BrakesSingle 280 mm disc

Dimension & Weights

Overall Length2200 mm / 86.6 in
Overall Width700 mm / 27.6 in
Overall Height1250 mm / 49.2 in
Seat Height33.1 inches / 840 mm
Wheelbase59.1 inches / 1500 mm
Fuel Tank Capacity18 L / 4.8 US gal / 4.0 Imp gal
Dry Weight190 kg / 419 lbs

Features

  • Four stroke engine
  • 90L twin cylinder engine
  • SOHC design
  • 2 valves per cylinder
  • Bevel gear driven
  • Released in 1982 as replacement for Ducati 900 SS
  • Direct competition with the 900 SS, considered one of the finest L-twins by Ducati
  • Improved transmission over the 900 SS
  • Handling as good or better than Bimotas
  • Shared frame with Mike Hailwood Replica Ducatis
  • Less restrictive exhaust can be added for increased power
  • Carburettors can be rejetted for increased power
  • Only 1,236 examples built
Ducati 900 S2 (1984)

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