Shimano GRX RX815 Di2 Rear Derailleur 11S Long Cage - Gr

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-RX815 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max.

-Adjustable chain stabilizer prevents chain slapping and drops
-Switch stabilizer on/off to match the terrain
-Gravel-tuned clutch tension
-Silent and uninterrupted rear shifting on rough terrain
-Total capacity: 38T
-Smooth and reliable mixed surface shifting
-Compatible with current road dual control lever

Specifications:
Brand: Shimano
Model: GRX RX815 Di2
Number of Gears: 11V
Minimum largest chainring: 34T
Maximum largest chainring: 30T
Minimum smallest chainring: 11T
Maximum smallest chainring: 11T
Maximum for chainring difference: 17T
Total Capacity: 38T
Confirmation: B-Axle_Hollow axle
Color: Black/Gray