How to Replace Master Links on Bike Chains

The master link on your bike chain allows you to effectively break apart and reconnect two links of the chain at will. This allows for easy on-the-spot repairs and easy chain replacements. Unfortunately, because of their design, master links are not quite as strong as the rest of the link of the chain, so when abused enough, they may break and require replacement themselves. Learn how to replace the master link on your chain and save time and money over taking your bike to the local shop.

Things You'll Need

  • Needle nose pliers
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Instructions

    • 1

      Set your bike either on its kickstand, in a dedicated work stand or on a stationary trainer.

    • 2

      Spin the cranks of the bike backward until you locate the master link. It should look like a regular bicycle chain link with a small clip situated over one side.

    • 3

      Use a pair of needle nose pliers to lift the clip of the master link and push it off the two pins that hold it in place. Set this clip aside and remove the front plate of the link. Slide the backing plate and the two pins connected to it out of the backside of the chain to separate the master link from the chain.

    • 4

      Push the two pins of the backing plate of your new master link through the two end links of the chain. Slide the face plate of the new master link over these two pins.

    • 5

      Push the master link fastening clip into place on the two pins of the master link. Use a pair of needle nose pliers to push the clip over the face plate until it snaps into place. Twist and tug at the chain to make sure the connection is secure.