# 12-speed cassette — Bike drivetrain and groupset compatibility

For 12-speed cassette, manufacturer is Shimano; component type is cassette; speeds is 12; pairs with is existing 11-speed road freehub, recorded from its source on 2026-08-11.

- **Manufacturer:** Shimano _(our reading, not quoted from the source)_
- **Component:** 12-speed cassette _(verified: appears in the quote below)_
- **Component type:** cassette _(our reading, not quoted from the source)_
- **Speeds:** 12 _(our reading, not quoted from the source)_
- **Pairs with:** existing 11-speed road freehub _(verified: appears in the quote below)_

## What the source says

> The 12-speed cassette is designed to be backwards compatible with the existing 11-speed road freehub, while the 12 speed-specific freehub (available on Dura Ace hubs currently) can’t be used with the 11-speed parts.

## Source

- https://www.lightbicycle.com/newsletter/Bike-Freehub-Cassette-Compatibility-Manual.html

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [Bike drivetrain and groupset compatibility](https://referencesource.org/bike-drivetrain-groupset-compatibility/).