Originally Posted by
Psimet2001
The gold missing link is a 9spd link. Not a 10 spd one - thus accounting for the difference in width.
Yes, that's a completely wrong link for the chain. Note the huge side clearance.
10 speed chains all about the same outside width, but two different widths across the inner plates. Campy and SRAM are the only narrow models that I can think of. All the rest are wider.