SRAM X.4 7-8-9 Speed Long Cage Rear Derailleur

This is the SRAM X-4 Rear Derailleur for 7/8/9 speed mountain bikes.

Features:

• Must be used with ESP shifters
• 1:1 shifter-to-derailleur actuation ratio for precise light-action indexing
• Compatible with 7, 8, and 9-speed systems