Shimano GRX Di2 RD-RX815 2x11-speed Rear Derailleur SHADOW RD+Use: Gravel, Road, Cyclocross Group: GRX Di2 Model: RD RX815 Mount Type: Direct Mount Gear front: 2 speed Gear rear: 11 speed Compatible Chain: HG EV 11 speed, HG X11 Max. teeth large sprocket: 34T Min. teeth large sprocket: 30T Max. teeth small sprocket: 11T Min. teeth small sprocket: 11T Max. Front Difference: 17T Total Capacity: 42T Master unit: No Firmware update by E tube Project: Yes E tube port (pcs): 1 E tube connector (pcs): 0 Material

Top gear teeth: 34-38T

the result of the new disc brake rotor is quieter than ever brake performance without sacrificing weight or heat dissipation

Caliper fixing bolt Tool size                     : 5 mm

with less brake noise and longer brake pad life

8 Light strap and chin protector

Guide and tension pulleys with 13 teeth and sealed bearings reduce tension in the lower gears and

More powerful shifting for reliable gear changes vs

Wrinkles may form when liquid is poured into the bottle

Designed for use as a bar-end on drop handlebars or with designated frames

also easy to get the internal silt out while during working period

Tiagra BR-4770

painted cage plates