The aluminium tube is a Ducati part and was fitted as standard to the S4 Foggy, you can order it from your local dealer. The pipe and hoses as shown in the pic are available as a kit from Ducati.
The Samco silicon hose kit for an S4R will come with a preformed hose, I guess you could cut pieces off the ends to use as joiners for the aluminium tube.
Awesome Thanks!
Both the S4 and S4R share the same coolant circuit on pre-Testeretta engines. The Testeretta motors are extremely similar from what I have seen after looking at some pictures. I think that the thermostat on Testeretta motors is different.
Thanks Again,