A bicycle chain connecting pin comprises a pin body dimensioned to fit
within an opening in a link plate of a bicycle chain, wherein the pin
body has an intermediate part and first and second ends. At least one of
the first and second ends has a corresponding first or second recess
defining a floor that faces in a longitudinal direction of the pin away
from the pin. The floor has a floor diameter of from approximately 60% to
approximately 90% of an outer diameter of the intermediate part.