microSHIFT Acolyte 8-Speed Rear Derailleur with SpringLock
microSHIFT Acolyte 8-Speed Rear Derailleur with SpringLock, Capable of handling a 12-46 tooth cassette, this microSHIFT Acolyte 8-speed rear derailleur boasts the innovative SpringLock chain retention system to keep your chain in place over rough terrain.