Shimano GRX RD-RX820 Rear Derailleur (Black) (12-Speed) (Shadow Plus) (For 2x)

Shimano GRX RD-RX820 Rear Derailleur Description: The Shimano GRX RD-RX820 rear derailleur is designed with chain security and quiet, stable shifting in mind for gravel riding. The GRX RD-RX820 is compatible with 11-34T and 11-36T 12-speed cassettes and provides a wide gear range so you can find your optimal cadence on every terrain and surface type. The GRX RD-RX820 features an integrated chain stabilizer that reduces chain slap and prevents chain drops on rough terrain and can be turned off with the on/off switch when riding on smooth surfaces. Designed for smooth and reliable shifting, GRX 12-speed is ready for any ride on any surface. Note: Cage is not interchangeable with RX822-GS and RX822-SGS derailleur cages. Features: Shadow Plus chain stabilizer (with on/off switch) prevents chain drops Reliable and smooth shifting on mixed surfaces Secure and silent shifting on rough terrain Specifications: Speed: 12 Speed Shifter Compatibility: Shimano Road (12 Speed) Shift Mechanism: Cable Actuated Max. Tooth: 36T Min. Tooth: 11T Chain Wrap Capacity: 42T Cage Material: Aluminum Chain Retention: Shadow Plus Color: Black Weight: 270g