Shimano GRX RD-RX812 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max Replace Images EXO sidewall protection option: Lightweight

EXO sidewall protection option: Lightweight yet durable casing for increased puncture resistance

increased air volume to add support throughout the travel and higher overall ride height for more confidence when things get steep

CXD 6804 LLB - XD-15 Ceramic-Hybrid

300mm size

Low sprocket: Max

Shimano GRX RD-RX812 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max Replace Images EXO sidewall protection option: LightweightWith an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max.