Shimano GRX RD-RX820 Rear Derailleur 12s & Max 36t Black

Features:

– Silent and secure rear shifting on rough terrain
– Adjustable chain stabilizer prevents chain slap and drops
– SHIMANO SHADOW RD+
– Smooth and reliable shifting on mixed surfaces
– ON/OFF stabilizer switch matches terrain
– Maximum front chainring difference: 17T

Specifications:

– Top sprocket: Max. 11T/Min. 11T
– Low sprocket: Max. 36T/Min. 34T
– Total capacity: 42T
– Rear Speeds: 12-Speed

‹ Link back to product: Shimano GRX RD-RX820 rear derailleur