Shimano Alivio RD-M3100-SGS Rear Derailleur - SHIMANO SHADOW RD - 9-speed BikeType_Road 2mm aluminum seatpost

2mm aluminum seatpost

helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner during a crash

which is easier than 36-50T in the A11 upkit

With its 4-piston construction

APPROX WEIGHTS IN KG

Shimano Alivio RD-M3100-SGS Rear Derailleur - SHIMANO SHADOW RD - 9-speed BikeType_Road 2mm aluminum seatpostRD M3100 SGS SHIMANO ALIVIO Rear Derailleur SHIMANO SHADOW RD 9 speed The SHIMANO ALIVIO M3100 rear derailleur delivers a low profile design that lets you ride aggressively with fewer interruptions thanks to its SHIMANO SHADOW design. Low profile design Total capacity: 45T Max. low sprocket: 36T Adjustment barrel MODEL NO RD M3100 SGS SERIES SHIMANO ALIVIO M3100 Series Color Series color Compatible chain CN HG53 9 speed Total capacity 45T B