SHIMANO GRX Di2 RD-RX827 1x12-SPEED REAR DERAILLEUR electric_hardtail MaxiFlow impact foam air channels

MaxiFlow impact foam air channels effective even at low speed

1 x Shimano Dura Ace Hollowtech II Bottom Bracket Cups BB-R9100 BSA

New power source: The evolution of the Di2 power source also gets a new and easy to use charger

maximizing both control and pedalling efficiency

SHIMANO GRX Di2 RD-RX827 1x12-SPEED REAR DERAILLEUR electric_hardtail MaxiFlow impact foam air channelsThe Shimano RD RX827 GRX Di2 rear derailleur combines cutting edge wireless shifting with gravel specific durability. Featuring SHADOW ES technology, this 12 speed component delivers a low profile design that minimizes impact exposure through its integrated chain stabilizer unit. The SGS long cage configuration handles demanding terrain with precision, while advanced engineeringincluding dual spring chain stabilization and reinforced alloy