E*thirteen Helix Race 12V Cassette Sram, Shimano

When installing the Helix R cassette, as with any cassette, we recommend checking chain wear. If your chain shows 0.5% or more wear, you will significantly decrease the wear life of your new cassette. Installing a new chain with your new cluster is a much better and economical solution.

Features

• 12 Speed.
• Teeth: 9,11,13,15,17,20,23,27,31,36 T.
• Compatibility: Sram, Shimano.
• Material: steel.
• Range: 9-50 T: 556%.
• Real weight: 180 g

*To be completed with sprocket 42-50 T (not included).
**XD freehub body is required for installation (sold separately).