Ducati Desmosedici GP4 - technical specification.

Ducati's MotoGP machine may have made an impressive debut in 2003, but that has not prevented the team's engineers from making changes to its specification over the winter.

More than 60 per cent of the 915 individual components that make up the new D16 GP4 are totally different to those on its predecessor, to the extent that they cannot be interchanged with the previous version.

Engine: liquid-cooled, 90 degree V4 four-stroke, desmodromic DOHC, four valves per cylinder

Capacity: 989cc

Maximum power: 169kW/230+ bhp @ 16500rpm

Maximum torque: approx. 100Nm/10.2kgm @ 14000rpm

Maximum speed: in excess of 330kph (205mph)

Transmission: six-speed cassette-type gearbox, with alternative gear ratios available. Dry multiplate slipper clutch. Chain final drive

Carburation: indirect Magneti Marelli electronic injection, four throttle bodies with injectors above butterfly valves

Fuel: Shell Racing V-Power

Lubricant: Shell Advance Ultra 4

Ignition: Magneti Marelli

Exhaust: Termignoni, two x two-into-one system

Frame: tubular steel trellis-style chassis, pressed aluminium swing-arm

Suspension: ?hlins upside-down 42mm front forks and ?hlins rear shock absorber, adjustable for preload, compression and rebound damping

Tyres: Michelin, 17" or 16.5" front, 16.5" rear

Brakes: Brembo, two 320mm carbon front discs with four-piston callipers. Single stainless steel rear disc with two-piston calliper

Dry weight: 148kg