Shimano Shimano GRX RD-RX822-GS Rear Derailleurs Road bike/components/derailleurs & shifters po-tnfaddonwareacc-123 The C-Series Performance Chassis pairs

The C-Series Performance Chassis pairs an aluminum heelcup with a glass filled nylon base tray

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Shimano Shimano GRX RD-RX822-GS Rear Derailleurs Road bike/components/derailleurs & shifters po-tnfaddonwareacc-123 The C-Series Performance Chassis pairsWith an integrated chain stabilizer mechanism, the GRX rear derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an on off switch for the chain tensioner. The RD RX822 rear derailleur is compatible with MTB cassettes with a 42T low sprocket max. GRX 12 speed rear derailleur for 1x cranks Adjustable chain stabilizer prevents chain slapping and drops Gravel