How Big of Cassette Can My Derailleur Handle?

The size of the cassette your derailleur can handle depends on the capacity of your derailleur. The capacity is determined by the amount of chain your derailleur can take up. Most mountain bike derailleurs have a capacity of around 30-40 teeth, which is enough for most cassettes.

If you’re using a larger cassette, you may need a longer chain and/or a different derailleur with more capacity.

For many cyclists, the question of how big of a cassette their derailleur can handle is an important one. After all, having a derailleur that can’t handle the size of your cassette can lead to some serious problems on the road. So, what’s the answer?

Unfortunately, it’s not quite as simple as just giving you a number. The truth is that it depends on a few factors, including the type of derailleur you have and the size of your chainrings. That said, in general, most derailleurs can comfortably handle cassettes up to 36 teeth without any issues.

So, if you’re planning on using a larger cassette, you may need to upgrade your derailleur first. As always, if you’re unsure about whether or not your derailleur can handle a particular cassette size, it’s best to consult with your local bike shop or an experienced cyclist before making any changes.

How Big of Cassette Can My Derailleur Handle?


Do I Need a New Derailleur If I Get a Bigger Cassette?

If you’re planning on swapping out your cassette for a bigger one, you’ll need to make sure you have the right derailleur to go with it. A bigger cassette will require a longer cage on your derailleur in order to accommodate the larger teeth, so if you don’t have the right size it could cause shifting problems. It’s always best to consult with your local bike shop before making any changes to your drivetrain.

Will Any Derailleur Work With Any Cassette?

It depends on the cassette. If the cassette has a 9-speed or lower cog, then any derailleur will work. If the cassette has a 10-speed or 11-speed cog, then you need a derailleur that is specific for that number of speeds.

The speed is determined by the width of the chain and the size of the cogs. A 9-speed chain is narrower than a 10-speed or 11-speed chain, so it can’t fit properly on wider cogs. And, likewise, a derailleur designed for a 9-speed chain won’t be able to take up all the slack in an 11-speed system.

How Do You Match a Derailleur to a Cassette?

When it comes to choosing a derailleur for your bike, the most important compatibility to consider is the amount of travel that is required for your particular cassette. The travel refers to how far the derailleur can move the chain from one cog to another and is typically measured in millimeters. To determine the travel required, simply count the number of teeth on your largest and smallest cogs and subtract the smaller number from the larger one.

This will give you the range in which your derailleur must be able to move in order to work properly with your cassette. In addition to considering travel, you’ll also want to make sure that your derailleur is compatible with the width of your rear dropout. Most modern bikes have what’s called a standard 135mm wide rear axle, but some older or less common bikes may have a narrower 126mm axle.

Be sure to check this measurement before making a purchase as using a wider derailleur on a narrower axle can damage your frame. Once you’ve determined which size derailleur you need, there are still more choices to be made! Different brands offer different features and weights, so it’s important to decide what’s most important to you before making a purchase.

If weight is a primary concern, then carbon fiber construction might be worth paying extra for. Or if you’re looking for extra durability, then models with steel cages tend to be stronger than those with aluminum cages even though they may weigh a bit more.

Can I Use 11 32 Cassette With Short Cage Derailleur?

11-32 cassettes are becoming increasingly popular as many riders switch to 1x drivetrains. But can you use an 11-32 cassette with a short cage derailleur? The answer is yes, but there are a few things to keep in mind.

First, your chain will be longer when using an 11-32 cassette. This means that you may need a longer chain, or you may need to trim your existing chain. Second, your shifting may not be as precise as it would be with a long cage derailleur.

This is because the shorter cage cannot take up all of the slack created by the larger cassette cog sizes. If you’re thinking about switching to an 11-32 cassette, make sure you do your research and know what tradeoffs you’re willing to make.

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Derailleur Capacity for 1X

If you’ve ever wondered what derailleur capacity you need for a 1x drivetrain, wonder no more! In this blog post, we’ll go over all the details to help you make the best decision for your bike. derailleur capacity is determined by the number of teeth on the largest cog and smallest chainring combination.

For example, 11-36t cassettes paired with a 40t ring have a total range of 426%. To calculate the percent range simply subtract the smaller number from the larger one and divide by the smaller number. So in our example, that would be (40-11)/11 = 3.27 or 326%.

You can use this same method to find other ranges like 9-34t which has a 377% range or 10-42t which has a 420% range. The next thing to consider is how much cross-chaining you’ll be doing. Cross-chaining occurs when you are using gears at opposite ends of the cassette, such as being in the small chainring up front and the large cog in the back or vice versa.

This puts extra stress on both the chain and gears and can cause premature wear. If you plan on doing a lot of cross chaining then you’ll want to choose a derailleur with a higher capacity to accommodate for this additional wear and tear. Another factor to consider is tire size.

Wider tires add rolling resistance so if you plan on running wider tires then you may want to choose a derailleur with slightly less capacity than what your percent range calculation comes up with. This will help prevent your chain from falling off when shifting under load. Conversely, if you plan on running narrower tires then it’s okay to go with slightly more capacity than what your calculation shows since there will be less rolling resistance and thus less chance of shifting problems when under load.

11-34 Cassette Short Cage

If you’re a road cyclist looking for an affordable, high-quality cassette, the 11-34 cassette is a great option. This cassette has a wide range of gears, making it ideal for climbing hills and riding on flat terrain. The 11-34 cassette also has a short cage, which makes it lighter weight and easier to install than some other cassettes.

Derailleur Cage Length Calculator

If you’re a mountain biker, then you know that having the right derailleur cage length is crucial. A too-short cage will limit your gears, while a too-long cage can cause your chain to fall off. So how do you know what size cage you need?

The answer is simple: use a derailleur cage length calculator! There are a few different ways to go about finding a calculator. One option is to search for one online.

Just type “derailleur cage length calculator” into your favorite search engine and see what comes up. There are quite a few options out there, so take your pick! Another way to find a calculator is by asking around at your local bike shop.

They may have one on hand that you can use, or they may be able to point you in the right direction. Either way, this is a great resource for getting the information you need. Once you’ve found a calculator, using it is pretty straightforward.

Just input some basic information about your bike and gear setup, and it will spit out the ideal cage length for you. That’s all there is to it! So if you’re not sure what size derailleur cage you need, don’t worry – just use a derailleur cage length calculator and get the perfect fit every time.

Medium Cage Derailleur Capacity

A derailleur is a device that helps to guide the chain from one sprocket to another on your bike. The cage size of a derailleur refers to how much space there is between the two pulleys that it uses. A medium cage derailleur typically has a capacity of 32-34 teeth, meaning it can accommodate up to that many teeth on the largest sprocket.

This is generally plenty for most people, but if you have a particularly large cassette or are planning on doing some serious hill climbing, you may want to consider a long cage derailleur with an even higher capacity.


In conclusion,if you have a Derailleur with a cassette input, it is best to use caution. cassettes are large and can handle more force than most derailleurs. Be sure to test the derailleur before using it on any particularly difficult trails or rides.

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