Sram:

REAR DERAILLEUR B-KNUCKLE KIT EAGLE 90 T-TYPE EAGLE (INCLUDES INNER, MIDDLE AND OUTER B-KNUCKLE, CABLE GUIDE AND COVER WITH BOLTS)
Compatible With
RD-90-A1

Use only SRAM parts with SRAM components. Installation of parts and accessories not originally intended could result in less than optimal performance and/or injury. For in-depth service information on SRAM products, refer to our website at www.sram.com/service. Information contained on SRAM Connect is subject to change at any time without prior notice.