NEW Shimano Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage height_5ft-03in giving you control on the

giving you control on the climbs and unleashing your speed on the descents

5 mm thick

Brakes: Shimano MT200 OR Promax DSK-925

Rear Der/Shifter Compatibility: Shimano Road Di2

NEW Shimano Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage height_5ft-03in giving you control on theThe Shimano Alivio RD M3100 Rear Derailleur features Shadow RD technology to keep the derailleur safe from trail obstacles. Super low profile Shadow RD technology Cage Length Long Chain Wrap Capacity (teeth) 45 Drivetrain Speeds 9 Largest Cog 36 Rear Der Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard, Shimano Rear Direct Mount