Shimano GRX RD-RX810 Rear Derailleur - 11-Speed, Long Cage, with Clutch - OUT OF BOX Water Polo Brand_KAP7 Mandible is the top Arundel

Mandible is the top Arundel model

By employing ENVE’s patented molded spoke hole technology and configuring it for external nipples

Straw can be mounted in either the front or rear

It’s made with a soft

Shimano GRX RD-RX810 Rear Derailleur - 11-Speed, Long Cage, with Clutch - OUT OF BOX Water Polo Brand_KAP7 Mandible is the top ArundelThe Shimano GRX 11 speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. Adjustable Shimano RD+ chain stablizer prevents chain slapping and