Enhanced chain security and quieter, more stаble shifting for gravel riding
The RD-RX820 is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide gear range so you can spin a comfortаble cadence no matter the terrain type. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON/OFF switch for outings on smooth surfaces.
•Silent and secure rear shifting on rough terrain
Adjustаble 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
•Top sprocket: Max. 11T/Min. 11T
•Low sprocket: Max. 36T/Min. 34T
•Total capacity: 42T
Average weight - 270
Rear speeds - 12
Compatible chain - HG 12-speed
Top-normal spring type|SHIMANO SHADOW RD+ - ✔
Mount|Direct attachment (conventional) - ✔
Mount|Direct mount - ✔
Cable adjuster - ✔
Max. front difference - 17T
Total capacity - 42T
Low sprocket|Max. - 36T
Low sprocket|Min. - 34T
Top sprocket|Max. - 11T
Top sprocket|Min. - 11T
