Used GRX Di2 rear derailleur (RD-RX817) designed for 1x systems. It will accommodate up to a 42t rear cog and includes a clutch to help prevent chain slap and chain drops.
It is well used, but perfectly functional and has brand new pulley wheels.
Can ship at buyers expense
To complete registration, please click the validation link that we just emailed to you on this address:
Unverified accounts will expire after 24 hours.
ResendPlease check your inbox, we've sent you a confirmation email!
