I am selling my 2003 Ducati ST4S as I recently bought a 2025 Ducati V2S. Every time I went to the Ducati dealer for work on the ST4S I saw the V2S and couldn’t resist.
I’ve had the ST4S for about a year and replaced/upgraded much. See list below. I can provide PDFs of services. You have to love the Ducati ST4s that is powered by a liquid-cooled, 996cc Desmoquattro 90-degree L-twin engine with four desmodromic valves per cylinder. I love the torque.
Bike is currently in GP shift (1 up and 5 down) but can easily be changed to standard.
37,000 miles
Refreshed front suspension w progressive rate springs $1,200
New Tires less than 500 miles on them Dunlop Q4 or 5 $400
New Battery $80
Replaced Headlight and Headlight assembly $1,200
Replaced thermostat and hoses $700
Replaced ECU $700
Rear signal $100
Hard saddle bags $800 upgrade
Olin rear suspension
Brembo Breaks
Marchesini Rims over $1,000 upgrade
Two seats stalk and wider aftermarket – both in great shape