10-11-12-speed rear derailleurs

The number of derailleur speeds refers to the number of gears on the rear cassette, here is a brief description of 10-, 11- and 12-speed derailleurs, their use and how to choose them:

10-speed derailleurs: Typically found on entry-level and mid-range bikes. They have a simpler construction compared to derailleurs for multi-speed drives. Suitable for casual commuter riders and those who don't care too much about a wide range of gears. Common on hybrid bikes, some road bikes and entry-level mountain bikes.
11-speed derailleurs: Work with an 11-speed cassette to provide more gears. Used on a wide variety of road, mountain and cyclocross bikes. Compared to 10-speed systems, they offer smoother shifting and a slightly wider gear range. Ideal for more demanding cyclists, and provide a good balance between gear range and simplicity.
12-speed derailleurs: Commonly found on higher-end mountain bikes, offer precise and quick shifting, often with the option of electronic shifting. Suitable for experienced cyclists, racers and those who want the latest technology and the maximum gear range. 12-speed drives are ideal for tackling steep climbs and difficult terrains.

Ultimately, your choice should correspond to your cycling goals, budget and specific requirements of the environment and terrain in which you will be riding.

How to choose the right 10-, 11- or 12-speed derailleur?

Determine the number of speeds: Find out the number of gears on the rear cassette of your bicycle. This will determine the number of derailleur speeds you need (e.g. 10-speed, 11-speed or 12-speed).
Consider brand compatibility: Different bike component manufacturers may have specific derailleur models designed for their drivetrain systems. Check your bike's drivetrain components to make sure they are compatible with the brand of derailleur you plan to buy.
Determine the length of the cage: Derailleurs are produced with different shoulder lengths - short, medium, and long. The length of the cage affects the maximum cassette size that the derailleur can hold. Determine the largest cassette size your bike supports and select a derailleur with the appropriate cage length. For example, if you have a larger cassette, you may need a derailleur with a longer cage.
Budget: Set a budget for your derailleur purchase, as prices can vary by brand, model, and features. Higher-end derailleurs often offer better performance, lower weight and more durability, but can be more expensive.
Read reviews and do your research: Find online reviews and resources that provide information on the performance and reliability of different derailleur models.

What are the common issues with 10-, 11- and 12-speed derailleurs?

Common issues include poor shifting performance, misalignment, skipping gears, excessive chain noise, or difficulty shifting certain gears. These issues can be caused by improperly adjusted cable tension, worn components, a bent derailleur hinge, or damage to the derailleur itself.

Can I replace a damaged 10-, 11- or 12-speed derailleur with a different speed derailleur?

In general, it is recommended to replace the damaged derailleur with a derailleur with the same number of speeds as the number of gears of the cassette. However, in some cases it may be possible to use a derailleur with a different number of speeds if properly adjusted and compatibility is taken into account, but it is best to consult a bicycle expert at the MTBIKER service centre.

How often to perform maintenance on a 10-, 11- and 12-speed derailleur?

Regular maintenance is important to maintain optimal functionality of your derailleur. It is recommended to regularly clean and lubricate the derailleur, especially the pulleys and sliding bushings, after riding in wet or muddy conditions. Worn pulleys must always be replaced. In addition, derailleur adjustment, cable tension and pulley wear may need to be checked to ensure smooth and accurate shifting.

Check out our video How to set up a rear derailleur