Originally Posted by
HillRider
IIRC, KMC doesn't recommend against the reuse of their link on a given chain but that when you replace the chain you should use the new link that came with it.
SRAM, for reasons never explained but possibly a patent issue, does recommend against the reuse of their 10-speed master link even on the chain it accompanied.
HillRider, it is a bit more complicated than that.
For their 11 speed chains, such as the ones that I use on my Campy-equipped bikes, KMC strongly advises against reusing their MissingLink.
See below,
KMC Chain
For their 9 speed chains KMC offers a re-usable MissingLink.
A new MissingLink goes for about $6.00 retail. Not a bad deal for the convenience the ML offers.
Ride often...ride safely!