Shimano's road clutch rear derailleur, the Ultegra RX, first surfaced before the Tour of Flanders in April. Although Shimano wasn't yet ready to send out samples, I asked Trek-Segafredo to borrow one of the team's units.
After a quick hotel-room install, my colleague Josh Evans and I took a clutch-equipped Trek Madone and a standard Trek Madone out for a few days of riding.
- Shimano launches Ultegra RX clutch rear derailleur
- Clutch performance: Degenkolb's Domane with Ultegra RX
- Horse for the Course: Trek Madone for Flanders sportive
Watch our short video for impressions on how the technology works on cobbles, rough roads and smooth roads.