Ducati ST4S (2001-02)

The Ducati ST4S, produced from 2001-02, features a liquid-cooled, 996cc L twin cylinder engine with a compression ratio of 11.5:1 and fuel injection. It has a maximum power output of 117 hp at 8750 rpm and maximum torque of 98 Nm at 7000 rpm. The bike has a wet multiplate clutch and a six-speed transmission with a straight cut gear primary drive. The frame is tubular steel trellis and the suspension system includes a Showa 43mm fully adjustable upside-down front fork and a progressive linkage with fully adjustable Ohlins monoshock with remote control preload adjustment. Braking features include two 320mm discs with four-piston calipers at the front and a single 245mm disc with two-piston caliper at the rear, both equipped with ABS. The ST4S weighs 202 kg dry and has a fuel capacity of 21 litres. The standing quarter mile time is 10.7 seconds and the top speed is 249 km/h.

Technical specifications:

Make Model: Ducati ST4S

Year: 2001 – 02
Engine: Four stroke, 90 degrees L twin cylinder, DOHC, desmodromic 4 valve per cylinder.
Capacity: 996 cc / 60.8 cu in
Bore x Stroke: 98 x 66 mm
Cooling System: Liquid cooled
Compression Ratio: 11.5:1
Lubrication: Wet sump
Engine Oil: Synthetic, 20W/50
Exhaust: 2 aluminum mufflers with catalytic converter (non-catalytic on USA version)
Induction: Fuel injection, 50 mm throttle body
Ignition: Marelli electronic
Spark Plug: Champion, RA59GC
Starting: Electric
Battery: 12V 10Ah
Max Power: 85.3 kW / 117 hp @ 8750 rpm
Max Torque: 98 Nm / 10 kgf-m / 72.2 ft-lb @ 7000 rpm
Clutch: Wet multiplate with hydraulic control
Transmission: 6 Speed
Final Drive: Chain; front sprocket 15; rear sprocket 38
Gear Ratio: 1st 37/15, 2nd 30/17, 3rd 27/20, 4th 24/22, 5th 23/24, 6th 24/28
Primary Drive: Straight cut gears; ratio 1.84:1 (32/59)
Frame: Tubular steel trellis
Front Suspension: Showa 43 mm fully adjustable upside-down front fork with TiN surface treatment,
Front Wheel Travel: 130 mm / 5.1 in
Rear Suspension: Progressive linkage with fully adjustable ~Ahlins monoshock with remote control preload adjustment. Aluminium swingarm
Rear Wheel Travel: 148 mm / 5.8 in
Front Brakes: 2x 320mm discs 4 piston calipers with abs
Rear Brakes: Single 245mm disc 2 piston caliper with abs
Front Wheel: 5-spoke light alloy 3.50 x 17
Rear Wheel: 5-spoke light alloy 5.50 x 17
Front Tyre: 120/70 – ZR17
Rear Tyre: 190/50 – ZR17
Rake: 24 degrees
Dimensions: Length 2070 mm / 81.4 in Width: 910mm / 35.8in Height 1274 mm / 50.2 in
Wheelbase: 1430 mm / 56.3 in
Seat Height: 820 mm / 32.3 in
Dry Weight: 202 kg / 467 lbs
Fuel Capacity: 21 Litres / 5.5 US gal / 4.6 Imp gal
Consumption Average: 4.8 L/100 km / 20.8 km/l / 50 US mpg / 59 Imp mpg
Standing 1/4 Mile: 10.7 sec
Top Speed: 249 km/h / 155 mph