When to Change Sprocket?

The time to replace sprockets isn't after the teeth are severely curled or worn down to a nub. Or when the chain starts jumping the cogs. To maintain top, reliable performance of your bike and to minimize damage to other components, sprocket replacement should happen long before then.

How long does a sprocket last?

A common rule is to replace both front and rear sprockets every time you replace your chain. This is a good rule to follow if your chain has lasted for its full life of, say, 15,000 miles. But, sometimes a sprocket replacement can wait in cases where you're replacing a prematurely worn chain.

How do you know if your sprocket chain is worn out?

Another, much easier way to check for a worn chain is to try to pull the chain away from the rear of the sprocket on the rear wheel. If the chain is worn, you'll reveal about half a tooth of the sprocket. A new chain will wrap around the sprocket snugly and won't pull away.