Components
Mountain Bike Tech Comes to Road Bikes in the Shimano Ultegra RX Rear Derailleur
With road cycling moving more and more to gravel and multi-surface riding, Shimano has adopted some of its mountain bike tech to the road with the introduction of the new Ultegra RX rear derailleur with chain stabilizing technology. The new RX800/805 rear derailleurs (mechanical and Di2) feature Shimano