Shimano GRX RD-RX812 11-Speed Rear Derailleur Long Black pickuponly Alfine S700

Alfine S700

all together at once

Serfas' Flat-Protection System lets you ride worry-free

Built with materials to help maintain the pack shape and to prevent billowing

Shimano GRX RD-RX812 11-Speed Rear Derailleur Long Black pickuponly Alfine S700With 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. Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping