How do you replace a rear sprocket on a bike?

How to change a cassette

1. Remove rear wheel and quick release. Shift into the smallest sprocket.
2. Remove cassette. Wrap your chain whip around the sprockets, and insert the lockring tool.
3. Clean freehub body.
4. Attach new cassette.
5. Attach lockring.
6. Reattach quick release and fit wheel back onto bike.

Why is my sprocket loose?

To actually answer your question, the sprocket bolts come loose because of all the energy being dispersed by the sprocket. Eventually, the tightest of tights on these little bolts comes undone. Therefore, before every ride – EVERY RIDE – tighten to spec. Get your torque wrench and tighten.

How do you adjust a sprocket?

Remove the chain guard. Check sprocket alignment by placing a straightedge across the face of both sprockets. The faces of the two sprockets should be square with the straightedge. If not, loosen the set screws in one or both sprockets and adjust as necessary to align the two sprockets.

What is the life of chain sprocket?

Generally, a well-cared-for bike will do 20,000 to 30,000 miles with a single chain-sprocket set. However, depending on the chain type, quality, and how you hold your bike can sometimes need replacement after just 5,000 miles.

How much does it cost to replace a chain and sprocket?

Chain and sprockets (front and rear – replace chain and sprockets as a set) is around $200 to replace (not counting labor – maybe an hourish at 50-80/hr). $250 in labor to change chain and sprockets. Sprockets are one of the easiest things to change out on a bike.

Can you repair bike chain?

A broken bicycle chain will render your bike useless but can be repaired on the road, at least sufficiently to allow you to ride home. You will need a bicycle chain-tool which comes as part of most multi-tools, as well as a spare quick-link.