Ducati ST4back 2003

Water cooled, 916cc, 90° V-twin, SOHC

Power: 104.69 HP (77 kW) @ 8500 rpm
Torque: 89 Nm (65.64 lb-ft) @ 7500 rpm
Final drive: Chain
Top speed: 149.13 mph
Curb weight: 513.7 lbs
Tags: Torque Sports
Engine and transmission
Engine type: 2 cylinders, 4-stroke, 90° V-twin
Displacement: 916 cc (55.97 cubic inches)
Bore × stroke: 3.7 inch × 2.6 inch (oversquare - shortstroke)
Cooling system: Water cooled
Power: 104.69 HP (77 kW) @ 8500 rpm
Torque: 89 Nm (65.64 lb-ft) @ 7500 rpm
Throttle: Cable operated
Valve train: SOHC, variable
Valves per cylinder: 4
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Fuel injection
Ignition type: Digital CDI
Compression: 11:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 6-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Spark plug pipe type: Champion, RA59GL
Motor oil: Synthetic, 20W/50
Starter: Electric
Physical measures
Length: 81.5 inch
Height: 46.5 inch
Wheel base: 56.3 inch
Seat height: 32.3 inch
Curb weight: 513.7 lbs
Dry weight: 445.3 lbs
Chassis and suspension
Frame type: steel, Trellis frame
Suspension: Cartridge - upside-down
Suspension travel: 5.12 inch
Fork angle: 24°
Brake: Twin Disk, Ø12.6 inch
Tire: 120 / 70 R17 ZR
Tire pressure: 0.14 PSI, with pillion: 0.17 PSI withpilion
Suspension: mono shock, Swingarm
Suspension travel: 5.83 inch
Brake: Disk, Ø9.65 inch
Tire: 180 / 55 R17 ZR
Tire pressure: 0.16 PSI, with pillion: 0.19 PSI withpilion
ABS available: No
Power-to-weight ratio: 0.33 KW/lbs (3.03 lbs/HP)
Top speed: 149.13 mph
Fuel capacity: 5.55 gals
Number of riders: 2 persons

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