FRONT DERAILLEUR, FD-M4000, ALIVIO,DOWN-SWING DUAL-PULL, FOR REAR 9-SPEED, BAND-TYPE 34.9M(W/31.8 & 28.6MM ADAPTER), FOR 40T, CS-ANGLE:66-69
Light operation force for stress free long riding Best design for big wheel New MEGA-9 LITE drivetrain Wide link for longer durability and precise shifting Quick / fast assemble feature