MTB Cassette FAQ

What is an MTB Cassette?

A mountain bike (MTB) cassette is a cluster of sprockets located on the rear hub of your bike, which works with the chain to power the bike as you pedal. It's a key component of the bike's drivetrain and as such there are many different brands and models to choose from. It’s vitally important that you fit the right cassette for your bike, as they are specific to your drivetrain and gearing.

How often should I replace my MTB cassette?

The lifespan of a cassette can vary based on usage, quality, and conditions ridden. Generally, you should inspect your cassette regularly and consider replacing it after 2,000 to 5,000 miles – alternatively if you experience skipping chains and poor gear changes, it may be time to check your cassette for wear & tear.

What are the symptoms of a worn MTB cassette?

Symptoms of a worn cassette include two main areas - symptoms you feel when riding and symptoms you can see when inspecting the cassette. The first symptom you typically will notice is a difficulty in changing gears, and when cycling under load, the chain may slip off the sprockets frequently. On looking at the cassette, you can see the teeth of the sprockets become overly rounded.

Can I install an MTB cassette myself?

Yes, with the right tools (a chain whip, a cassette lockring tool, and a wrench), you can install an MTB cassette yourself.

Does cassette range affect the chain length?

Yes, the number of teeth on the largest sprocket of your cassette helps determine the required chain length. A longer cassette range typically requires a longer chain to accommodate the larger sprockets.

How do I clean my MTB cassette?

Cleaning your MTB cassette is a pretty simple job, made easier by having the right bike cleaning products to hand. The first step is to remove the rear wheel and the cassette from the hub if you are carrying out a thorough clean. The next step is to use a degreaser to clean the sprockets and get in all of those nooks and crannies, then brush away dirt and grime before rinsing and refitting.

Can I fit any brand of cassette on my MTB?

The compatibility of cassettes across different brands and models depends on the freehub body design and the drivetrain setup. Ensure that the replacement cassette matches the hub's fitting standard (Shimano/SRAM and also the number of gears your MTB runs)