Stiff Link Meaning in Cycling

A stiff link is a common mechanical problem where a single link in a bicycle chain does not bend freely. This usually happens after a chain repair or if dirt and rust have caused the metal plates to seize together. You can feel it as a repetitive jump or skip every few rotations as the link passes through the derailleur. It can cause noisy shifting and, in some cases, make the chain fall off the gears entirely.

For example, a rider might notice their bike clicking every three seconds while pedaling at a steady pace. To fix a stiff link, you can often gently flex the chain sideways by hand to loosen the tight plates. If that doesn’t work, a chain tool can be used to slightly adjust the pin and restore the link’s mobility.

Proper lubrication is the best way to prevent this issue from happening in the first place. A smooth-moving chain is the key to a quiet and efficient bicycle.