How do you remove a rear sprocket?
Wrap the chain whip tool around the largest sprocket and secure it. The chain whip tool holds the cassette in place so that you can loosen the lockring. Place the sprocket removal tool around the lockring. Use a crescent wrench to turn the lockring counter-clockwise, so that you can loosen and remove it.
What is a bicycle freewheel?
A freehub is a type of bicycle hub that incorporates a ratcheting mechanism. A freewheel mechanism allows a rider to stop pedalling whilst the cycle is still in forward motion. On a cycle without a freewheel mechanism, the rider has to keep pedalling whenever the cycle is moving.
What tools do I need to remove a bike cassette?
The lockring is designed to hold the cogs of the cassette in place on the hub. In order to remove and replace your cassette, you need to unscrew this lockring. You’ll need three tools to do this: a chain whip, a cassette lockring remover and a large adjustable crescent wrench.