Shimano GRX RX812 11 Speed Rear Derailleur (Black) Type:Medium Cage Used with the 1707

Used with the 1707

the tool is compatible with Shimano

Shimano TX505 135x9mm width rear hub 32 spoke holes Centerlock

like the perfect fit

Shimano GRX RX812 11 Speed Rear Derailleur (Black) Type:Medium Cage Used with the 1707SHIMANO GRX Rear Derailleur SHIMANO SHADOW RD+ 42T max low sprocket 11 speed With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Features Silent and