SRAM SX Eagle, 12-Speed, Aluminum Rear Derailleur

Proven SRAM 1x-specific X-HORIZON design easily facilitates 11- to 50- and 10- to 50-tooth cassette capacity, providing quiet, consistent performance and durability* A fully featured Eagle derailleur. Now offering more Eagle options than ever before.* X-SYNC pulley technology provides greater efficiency, crisper shifting and quieter operation.* Cage Lock offers discovery-level riders easy trail side wheel removal.