FB: How often should you change a chain and sprockets?
B&W: There’s no categorical answer to that one. It’s a pretty individual case with some people achieving over 20,000 miles from a chain in some instances. In reality, the more you maintain a chain, the longer it will last you. That means regular adjustment and lubrication. As a result of doing so, you’ll also prolong the life of your sprockets. One thing to note is that if you change your chain it’s good practice to change your sprockets at the same time. Otherwise you’ll be coupling worn sprockets on a new chain, or vice versa, which will exaggerate wear on the new component.
FB: Rivet links vs split links – which is for what?