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12-Speed Bike Chains

(30 products)

12-speed bike chains are designed for modern drivetrains and are only compatible with 12-speed cassettes. Unlike lower-speed systems,12-speed chains are not always interchangeable, as different brands use unique designs and tolerances.

SRAM and Shimano 12-speed chains use different technologies (SRAM Flattop and Shimano HG+). Therfore, choosing the correct chain for your drivetrain is essential for performance and compatibility.

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12 Speed Chain Compatibility Explained

Not all 12-speed chains are the same.

While earlier drivetrains followed similar standards, modern 12-speed systems vary between brands in terms of chain width, roller size and plate design.

This means that using the “wrong” chain for your drivetrain can lead to poor shifting, increased wear or reduced performance.

SRAM 12 Speed Chains. Flattop vs Eagle.

SRAM uses two different 12-speed chain designs:

  • Flattop chains. Used on SRAM AXS road and gravel drivetrains. And now their MTB drivetrains too.
  • Eagle chains. Designed for previous generation SRAM MTB systems.

Flattop chains use a unique flat outer plate and different roller dimensions. They are not compatible with standard Eagle drivetrains.

Likewise:

Standard 12-speed chains should not be used on SRAM AXS systems. Unless they specifically state Flattop chain compatibility.

The mismatch can lead to poor engagement and increased wear.

Shimano 12 Speed Chains and HG+

Shimano 12-speed chains use HG+ (Hyperglide Plus) technology. This features redesigned plates and shaping to improve shifting under load.

HG+ chains are designed to work with Shimano 12-speed cassettes and chainrings.

While some cross-compatibility exists (see below), optimal performance is achieved when using a full HG+ drivetrain.

Why Use a Different 12 Speed Chain?

While it’s generally recommended to match your chain to your drivetrain, some riders choose to run alternative 12-speed chains depending on their priorities.

Common reasons include:

Speed and Efficiency

Some chains are designed to reduce friction and may feel faster or smoother under load. Riders focused on performance may experiment with different chain options to optimise efficiency.

Durability and Wear Life

Not all chains wear at the same rate. Some models are built for longevity, making them a better choice for high-mileage riders, commuters or those riding in harsh conditions.

Price and Value

Premium chains are significantly more expensive. While mid-range options may offer similar performance for everyday riding. Riders may choose a chain that balances cost and durability.

Aesthetics

Chain finishes vary, including silver, black and coated options. Some riders choose chains that match the look of their drivetrain or bike build.

Choosing the Right 12 Speed Chain

When selecting a 12 speed bike chain:

  • Match the chain to your drivetrain brand (Shimano or SRAM).
  • Identify whether your system requires Flattop, Eagle or HG+.
  • Ensure full compatibility with your cassette and chainrings.

Choosing the correct chain helps maintain smooth shifting and extends the life of your drivetrain.

Explore our full range of bike chains to compare different speeds and drivetrain options.

FAQs

What is the difference between SRAM Flattop and Eagle chains?

SRAM Flattop chains are used on the latest Road, Mountain and Gravel drivetrains. while Eagle chains are designed for MTB systems.

They use different shapes and dimensions, so they are not interchangeable.

Do I need a new cassette when replacing a 12 speed chain?

If your 12 speed cassette is worn, installing a new chain may cause skipping. It’s often recommended to replace the cassette at the same time to maintain smooth shifting.

Are all 12 speed quick links reusable?

Most 12-speed quick links from Shimano and SRAM are designed for single use. Reusing them can reduce connection strength and reliability.

Why is my new 12 speed chain skipping?

Skipping is usually caused by a worn cassette or chainrings. It can also happen if the chain is not compatible with your drivetrain.

How do I know if my 12 speed chain is worn?

Use a chain wear tool to check elongation.

Replacing your chain early helps prevent damage to your bike cassette and chainrings.

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