Shimano GRX Shadow Plus RD-RX812 11-speed Rear Derailleur

With the GRX RD-RX812 rear derailleur by Shimano you can shift reliably off-roadWith the Shimano GRX RD-RX812 rear derailleur you can shift smoothly and quietly on rough terrain. An adjustable chain stabilizer and the Shimano Shadow RD technology counterac