SunRace M900 Rear Derailleur - 9-Speed Medium Cage Black MFPN=RF728-AG-B B-RAD Bases are the foundation

B-RAD Bases are the foundation for the B-RAD system

Key technologies include:

Color Black Defined Color Black Designed for ebike Yes Flat Protection Tread and Sidewall ISO Diameter 622 / Road / 29" ISO Width (mm) 64 Labeled Size 29 x 2

SRAMs most affordable ten speed chain offers most of the strength and all of the shifting performance of other models

This pole uses the new Swix sizing system for 22-23 that measures to the strap rather than the top of the grip

SunRace M900 Rear Derailleur - 9-Speed Medium Cage Black MFPN=RF728-AG-B B-RAD Bases are the foundationSunRace M900 Rear Derailleur 9 Speed Medium Cage Black. The SunRace M9 Rear Derailleuris designed for 9 speed MTB drivetrains. TECH SPECS Largest Cog 51 Color Black Rear Der Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 8 Drivetrain Speeds 9 Weight 270 Cage Length Medium