SunRace M57 Rear Derailleur - 7/8-Speed, Long Cage, Black EA Rear Derailleur

RDM57.LDB0.0S0.BX.C SunRace M57 Rear Derailleur - 7/8-Speed, Long Cage, Black Rear Derailleur EA Black Largest Cog 34 Color Black Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 7 Drivetrain Speeds 8 Weight 354 Chain Wrap Capacity (teeth) 43 Cage Length Long