Shimano GRX RD-RX812 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max Replace Images This not only provides a

This not only provides a superior indoor riding experience but will eliminate any stress on your body and equipment as you won't be forced to ride in a twisted position

The Dert Under Bash Guard is a lightweight CNC alloy bash guard that delivers excellent chainring protection

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

300mm size

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

Shimano GRX RD-RX812 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max Replace Images This not only provides aWith 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.