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12 Speed Cassettes

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12 speed cassettes are designed for modern high-performance drivetrains, offering wider gear ranges and smoother shifting.

Our range includes Shimano and SRAM 12 speed cassettes for mountain bikes, road bikes and e-bikes.

Compatibility is essential. Ensure your cassette matches your drivetrain brand, freehub type (HG, XD, XDR or MicroSpline) and chain speed for optimal performance.

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12 Speed Cassette Compatibility

A 12 speed cassette must match your 12 speed chain, rear derailleur and shifters. Sprocket spacing differs from lower-speed systems, so mixing components will result in poor shifting performance.

Confirm both drivetrain speed and freehub compatibility before purchasing.

Browse our full range of bike cassettes for additional speed options.

Freehub Types for 12 Speed Systems

Different 12 speed systems need specific freehub bodies:

  • Shimano HG – some 12 speed road systems
  • SRAM XD / XDR – required for many SRAM 12 speed setups
  • Shimano MicroSpline – used for Shimano 12 speed MTB cassettes

Always confirm your hub standard before upgrading.

Choosing the Right Gear Range

12 speed cassettes are available in a variety of tooth ranges, such as 10–52T for mountain bikes or tighter ratios for road bikes.

A wider range improves climbing capability, while closer ratios provide smoother cadence control at speed.

FAQs

What does '12 speed cassette' mean?

A 12 speed cassette has 12 sprockets on the rear wheel, designed to work with a 12 speed chain, derailleur and shifter.

Each additional speed reduces the spacing between gears, allowing smoother and more precise shifting.

Will a 12 speed cassette fit my bike?

A 12 speed cassette will only work if your drivetrain (dearailleur, shifter, chain and crankset) is designed for 12 speeds and your freehub body matches the cassette standard (HG, XD, XDR or MicroSpline).

Always confirm both drivetrain speed and freehub compatibility before purchasing.

Can I upgrade from 11 speed to 12 speed?

Upgrading to 12 speed requires replacing every single drivetrain component.

This includes the cassette, chain, derailleur and shifter. In some cases, you may also need a different freehub body.

Check full drivetrain compatibility before upgrading.

What is the difference between XD, XDR and MicroSpline?

XD and XDR freehubs are commonly used for SRAM 12 speed systems. MicroSpline is Shimano’s 12 speed MTB freehub standard.

These systems are not interchangeable, so matching your cassette to the correct freehub is essential.

When should I replace a 12 speed cassette?

A cassette should be replaced when the teeth show visible wear, shifting becomes inconsistent, or when installing a new chain on a heavily worn drivetrain.

Replacing worn components together will improve shifting performance and longevity.

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