BG 66 Ultimax Coil (Labour Included) Sram No Map The RD-RX810 rear derailleur is

The RD-RX810 rear derailleur is compatible with road cassettes with a 34T low sprocket max

Smart sensor technology senses motion and automatically turns lights on when inserted into mount

One-piece upper promises a secure fit

better connectivity

BG 66 Ultimax Coil (Labour Included) Sram No Map The RD-RX810 rear derailleur isDon't forget to add your desired tension in the special instructions! Orders without a noted tension will be strung to the average recommended tension for the racquet. The BG66UM has a 0. 65mm thin gauge and the perfect balance of maximum speed, control, and durability, making it the best choice for the world's top players.