Hi, and welcome to the friendly forum. Several companies do a kit for the ST955i. EBC is good and I have used them in the past, be very wary of buying Chinese made kits as they are often inferior materials. The Speed Triple 955i is really easy to replace the clutch, no having to measure the stack height etc etc. Personally, I would change the engine oil and filter. Good luck and hope it all goes well.
Yes have to agree EBC or Ferodo but haven't seen Ferodo for many many years now other than brake pads.