Features:
Made of high-strength steel for extreme rigidity.
Cassette cogs: 9-11-13-15-18-21-24-28-32-36-42T.
Improved structure for smoother shifting.
Compatible with XD system.

Specifications:
Material: Steel
Ratio: 9-11-13-15-18-21-24-28-32-36-42T
Weight: 437g / 15.4oz

Package List: Y18846
1 * Freewheel