With an integrated chain stabilizer mechanism, the SHIMANO GRX-Limited derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The RD-RX812-LE rear derailleur is compatible with MTB cassettes with a 42T low sprocket max.
With an integrated chain stabilizer mechanism, the SHIMANO GRX-Limited derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The RD-RX812-LE rear derailleur is compatible with MTB cassettes with a 42T low sprocket max.
