SHIMANO GRX RD-RX820 2 x 12-Speed Rear Derailleur (Max 36T)

Enhanced chain security and quieter, more stable 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 comfortable 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.

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
Top sprocket: Max. 11T/Min. 11T
Low sprocket: Max. 36T/Min. 34T
Total capacity: 42T

PRODUCT SPECIFICATIONS

MODEL NO RD-RX820
SERIES GRX 12-speed
Color Series color
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
Fluoric coated link bushings 4
Pulley|Guide pulley bearing ✔
Pulley|Tension pulley bearing ✔
Pulley|Teeth 11/13T
Pulley|Sunken type pulley screw ✔
B-axle|Hollow axle ✔