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Ah! but it's not a gold master, it's the black coffin type. Most probably the same as my 907ie. I'll check.
Hmm. No idea to be honest but as far as I'm aware all the gold master cylinders fitted to twin disc Ducatis are 16mm
Unfortunately not.
The OEM exhausts have threaded holes with plugs for the service technician to fit an O2 sensor for setting the CO. See item 8 in this screenshot...
Not surprising. Your ECU is for a different bike. The ST4s never had Lambda sensors nor did the fuel level sender have any connection to the ECU.
The original footrest hangers/plates have been removed and replaced with those fancy rider footrests. It will be very difficult to fit pillion...
It wasn't my write so I don't know where he got them. What size is your master cylinder? There should be a number on the bottom somewhere...