SHIMANO GRX - Rear Derailleur - SHIMANO SHADOW RD - 34T max low sprocket - 2x11-speed. Compatible with road cassettes with a 34T low sprocket max.

Features
SHIMANO SHADOW RD (11-speed)
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
Smooth and reliable mixed surface shifting

Specifications
Compatible with current road DUAL CONTROL LEVER
Top Sprocket: Max. 11T / Min. 11T
Low Sprocket: Max. 34T / Min. 30T
Total Capacity: 40T
Max Front Difference: 17T
Compatible Chain: HG-EV 11-speed / HG-X11
Recommended Cassette: CS-R8000 11/30T, or 11/32T; CS-HG800-11 11/34T
Cable Adjuster: Yes
Pulley Teeth: 13t

Mfr Claimed Weight
255g