SRAM, Eagle S100 B1, Rear Derailleur, Speed: 12, Black, Standard

Description

* Utilizes proven Drag Spring cage damper for confident chain retention* Max 500-percent range for pairing with PG1210 cassette* X-Actuation for use with Eagle Drivetrain shifters* SRAM Model ID: RD-S100-B1* S100 replaces prior models of SX Eagle and NX Eagle