I know exactly what cable splitters are and I had them on my own S&S coupled bike. What I meant by "not removed" is that the halves of the splitters are permanently installed on the cut cable ends and left in place. The splitters are then taken apart by unscrewing the halves to "split" the cable for bike disassembly or handlebar change and later the cable is reassembled by screwing the splitter's halves back together.