How to Install a Mountain Bike Rear Derailleur in 5 Simple Steps
To install a mountain bike rear derailleur, first, remove the old derailleur by loosening the retaining bolt and pulling it off. Then, attach the new derailleur to the hanger using the mounting bolt. Adjust the position of the derailleur so that the jockey wheel lines up with the cassette. Finally, adjust the limit screws and cable tension to ensure smooth shifting.