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
✔
Rear Derailleur Gravel SHIMANO GRX RD-RX820 12-Spd For 2X Direct Attachment Ind. Pack IRDRX820
