Shimano GRX RD-RX822 后拨链器 12速 长 笼 黑色

Improved chain security and quieter, more stable shifting when riding on gravel

Compatible with 11-34T and 11-36T 12-speed cassettes, the RD-RX820 offers a wide gear range so you can achieve a comfortable cadence regardless of the terrain type. The SHIMANO GRX 12-speed rear derailleur also has an integrated chain stabilizer that ensures quieter shifting and safer chain management on rough rides. And the chain tensioner has an ON/OFF switch for trips on smooth surfaces.

highlights

• Quiet and safe rear wheel shifting on rough terrain
• The adjustable chain stabilizer prevents the chain from hitting and falling
• SHIMANO SHADOW RD+
• Smooth and reliable shifting on mixed surfaces
• The ON/OFF stabilizer switch adapts to the terrain
• Maximum difference between front chainrings: 17 teeth
• Upper sprocket: Max. 11T/Min. 11T
• Low Sprocket: Max. 36T/Min. 34T
• Total capacity: 42T

scope of delivery

• 1 x Shimano GRX RD-RX820 rear derailleur 12-speed long cage (see item description for details)