If you have a standard chain with no master link: Seat the chain in the chain tool, with the pin of the chain tool aligned with a pin in the chain. Turn the handle of the chain tool until you push the pin out far enough that you can break the chain.
Do all bike chains have a master link? Nope, not all chains have master links. If your bicycle has derailleurs, it means it’s unlikely that your bike’s chain will have a master link.
How often should I change my bike chain?
The 2,000-Mile Rule. To avoid this accelerated wear of your cassette and chainrings, a general rule of thumb is to replace your bike’s chain every 2,000 miles. Mind you, this is just a starting point. No two chains will wear at exactly the same rate because no two riders treat their chains the same. 4
To find the master link on your chain, mount your bike in a bike work stand. If you don’t have a work stand, flip the bike over so it rests on its handlebars and saddle. Stand on the drivetrain side of your bike so you’re able to look straight down on the chain.
A master link or quick-release link is a roller chain accessory that allows convenient connection and disconnection of a chain without the need for a chain tool. It acts as a set of the chain’s outer plates, so joining two sets of the chain’s inner plate ends. Such master links may or may not be re-usable.
IS KMC MISSING LINK COMPATIBLE WITH SHIMANO CHAIN, SRAM CHAIN, OR CAMPY CHAIN? Yes, KMC constructs Missing Link I, II, 9, and 10 for 7.3mm, 7.1mm, 6.6mm, and 5.9mm respectively; all Missing Links are compatible with Sram, Shimano, and Campy equivalent chains.
However, even Shimano is now changing its tune and its latest 11 and 12 speed chains are available with master links.