Measure the correct chain length by comparing the new chain against the one you’re replacing. You can also wrap the chain around the front chainring and the largest sprocket of the rear cassette.

The more cost-effective chains often aren’t the correct length, requiring you to make some adjustments to achieve the perfect fit. That’s where knowing how to use a chain breaker becomes an invaluable ...

The diagrams below show the effect of correct chain length for a deraileur gear. The rear wheel's position is adjusted until the pulley cage on the deraileur swings between the two positions show. The ...