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The chain on an electric mountain bike performs the same functions as on a conventional mountain bike, but it may have certain specific characteristics to adapt to the particular constraints of electric mountain bikes. Here is a description of its function and characteristics:

Function :

1. Power transmission:

The main function of the chain is to transmit the rider's pedaling power from the crankset to the rear wheel, thus helping to move the bicycle forward.

2. Link between transmission components:

The chain connects the crankset, chainrings, cassette sprockets and rear derailleur, ensuring synchronization and smooth operation of the entire drivetrain.

Features :

1. Compatibility with electric transmission:

Electric mountain bikes can be equipped with specific drivetrain systems, including rear derailleurs and cassettes optimized for e-bikes. The chain must be compatible with these specific components to ensure optimal operation of the electric transmission system.

2. Sustainability:

Due to the additional power generated by the electric motor and the additional load carried by the drivetrain system, electric mountain bike chains may require sturdier construction and more durable materials to resist wear and stretching premature.

3. Anti-rust coating:

Some electric mountain bike chain models may have an anti-rust or anti-corrosion coating to protect the chain from the elements and extend its life, especially in wet or muddy conditions.

4. Flexibility:

Although the chain must be strong enough to handle the additional power generated by the electric motor, it must also remain flexible enough to accommodate different chainring and sprocket sizes without compromising the operation of the transmission system.

5. Compatibility with transmission:

It is crucial to choose a chain that is compatible with the number of speeds on the cassette and rear derailleur of the e-MTB, as well as the type of chainring used, whether it is a single, double or triple chainring.

In summary, the chain of an electric mountain bike fulfills the same power transmission function as on a conventional mountain bike, but may require specific characteristics to adapt to the particular constraints of electric mountain bikes, particularly in terms of durability, compatibility with electrical transmission and corrosion resistance.