Ducati 900 S2 (1985)

Ducati 900 S2 (1985)

The Ducati 900 S2 is a testament to Italian ingenuity and determination in the face of adversity. Its development was shaped by the financial struggles of the European manufacturers during the late 1970s and early 1980s, yet it emerged as a refined and capable motorcycle.

This four-stroke, 90L twin-cylinder engine features a SOHC design with two valves per cylinder, driven by bevel gears. The S2’s engine character is characterized by its smooth and progressive power delivery, making it an enjoyable machine to ride.

Despite being overshadowed by its predecessor, the Ducati 900 SS, the S2 boasts significantly improved transmission and handling that rivals some of the best European motorcycles. Its lightweight frame and agile chassis make it a pleasure to navigate twisty roads, while its ample power reserves allow for spirited riding.

The result is a bike that not only meets but exceeds expectations, making the Ducati 900 S2 an exceptional machine that stands out in its class.

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 (1985)

All Specifications

Make & Model

ModelDucati 900 S2
Year1985

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
  • SOHC design
  • 2 valves per cylinder
  • Bevel gear driven
  • Released in 1982
  • Direct replacement for Ducati 900 SS
  • Limited production run of 1,236 units
  • Shared frame with Mike Hailwood Replica Ducatis
  • Improved transmission over 900 SS
  • Handling as good or better than Bimotas
  • Potential for power increase with aftermarket exhaust and rejetted carburetors
  • Meets emissions regulations

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