Shimano

GRX rear derailleur replacement guide and tension pulley setSuitable for GRX RD-RX825 and RD-RX820 rear derailleurIts recommended that you replace your derailleur pulley wheels periodically for the best shifting performanceSet comprises of two pulley wheels and is a genuine Shimano replacement part..

RD-T4000 cable fixing bolt and plate is product number 3 in the attached imageGenuine Shimano replacement part..

Genuine Shimano replacement part..

Wide link Shadow design Dyna-Sys 10-speed top normal Deore rear derailleurDouble servo-panta mechanism for smooth light action shiftingSingle tension spring prevents contact with the chainstay resulting in a silent rideAlloy and steel construction leads to lower weight without compromising strength ..

RD-T6000 inner plate is product number 19 in the attached imageGenuine Shimano replacement part..

RD-T6000 outer plate assembly is product number 8 in the attached imageGenuine Shimano replacement part..

RD-T610 inner plate is product number 9 in the attached imageGenuine Shimano replacement part..

RD-T661 pulley bolt is product number 9 in the attached imageGenuine Shimano replacement part..

RD-T670 outer plate assembly is product number 7 in the attached imageGenuine Shimano replacement part..

Genuine Shimano replacement part..

RD-T8000 bracket axle unit for normal type is product number 1 in the attached imageGenuine Shimano replacement part..