Shimano GRX RD-RX812 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max YGroup_7033619316781 Pros: No more struggling to

Pros: No more struggling to get hold of your water bottle in the wet

without excessive pressure in the perineum region

Easy installation without slipping or pinching

it is TLD quality

Durable steel barrel and piston

Shimano GRX RD-RX812 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max YGroup_7033619316781 Pros: No more struggling toWith 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.