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Shimano GRX RD-RX820 2x12v Gravel rear derailleur
Chain stabiliser, ON/OFF
Our opinion
The Shimano GRX RD-RX820 2x12v rear derailleur offers quiet and secure gear changing. It will keep up with you on all your gravel adventures.
Aurélien L.
Cycling in all its forms
An essential part of the new Shimano GRX 12-speed groupset, this rear derailleur is packed with features. Equipped with an integrated chain stabiliser, the Shimano GRX RD-RX820 prevents chain slap and jumping for safer handling on rough terrain. Gear changes are smooth and quiet. The chain tensioner has an ON/OFF switch, as on the MTB range, to improve chain retention on all terrains. Compatible with 12-speed cassettes in 11-34T and 11-36T, this Shimano GRX RD-RX820 rear derailleur offers a wide range of gears so you can find the best cadence for every ride.Technical specifications:¤
- Reference: RD-RX820
- Weight: 270 grams
- 12 speeds
- Maximum difference between chainrings: 17D - Small sprocket: Max. 11T / Min. 11T min - Large sprocket: Max. 36D / Min. 34D - Total capacity: 42 D- Shimano Shadow RD+ technology - ON/OFF switch - Chain stabiliser
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