Ducati ST4S ABS (2005-06)

The Ducati ST4S, manufactured in 2005-06, is a high-performance sports bike with a liquid-cooled four-stroke engine, a capacity of 996cc, and 117 horsepower at 8750 rpm. The engine is a L-twin cylinder design with dual overhead camshafts and four-valve desmodromic technology. The bike has a six-speed transmission with a wet multiplate clutch, and a chain drive with a 15-tooth front sprocket and a 38-tooth rear sprocket. The frame is made of tubular steel trellis, and the suspension consists of a fully adjustable upside-down fork and a fully adjustable monoshock with remote control preload adjustment. The bike has anti-lock brakes, with dual 320mm discs and four-piston calipers in the front, and a single 245mm disc with two-piston calipers in the rear. The front and rear wheels are light alloy 5-spoke 17-inch rims, with 120/70ZR17 and 190/50ZR17 tires, respectively. The bike has a top speed of 249 km/h (155 mph), and average fuel consumption of 4.8 L/100 km (50 mpg). The dry weight is 217kg (478 lbs), and the fuel tank has a capacity of 21 litres (5.5 US gallons).

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Technical specifications:

Make Model: Ducati ST4S

Year: 2005 – 06

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: 217 kg / 478 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