Ask a Mechanic: Determining Cassette Wear

Welcome to our Ask a Mechanic column where our expert mechanics Daniel Slusser and Greg O’Keeffe answer your bike maintenance questions. If you have a question for us, please post it on the Art’s Cyclery Facebook Wall or e-mail Daniel directly at 

How do you know when to change a cassette? It’s a question that is consistently brought to me year after year, usually after the question, “When should I replace my chain?” The answer to the cassette question is somewhat messy however, so I tend to avoid it. But, push came to shove with our VeloNews Ask a Mechanic video series, so we decided to give you the answer in gory detail. Former Team Highroad mechanic Greg O’Keeffe reviews all the warning signs that indicate when it is time to replace your cassette in this easy to digest how to video.

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DS barrier bunny hopDaniel Slusser is a professional bicycle mechanic with over ten years of experience. He holds a bachelor’s degree in business administration from HSU and a master’s degree in history from Cal Poly. When he is not riding, wrenching, or writing he enjoys spending time with his wife and two children.