Helix R Clusters can be used to service e*thirteen Helix R cassettes.
- Designed to pair with steel cog cluster to create a 9-50t cassette
- Helix R 12-speed clusters are backward compatible with and can be used to upgrade an existing TRS+ 9-50 cassette
- Material: Aluminum
- Cassette Body Type: SRAM XD 11/12 Speed
- Tooth Count: 42-50
- Drivetrain Speeds: 12