In over 110K on 2 streets I have had a few sets of C&S.
As TomS says the first ones were 116, and then they made the end of the swing arm ugly for 118.
Funny thing was on my last change, using std 118 set it was almost out of adjustment so 2 links removed.
Odd, but True. In thus case the Triumph mechanic fitted 118, I took it back, so dont blame the orginal mechanic.