Shimano's refinements of the latest Dura-Ace Di2 group impress upon us the brand's need for speed reliability and performance. This is the group where Ultegra receives trickle-down technology from and what we would categorize as top-tier. In particular the Dura-Ace RD-R9250 Di2 Rear Derailleur leaves us ready to cross finish lines first and beat out our best times and climbs. We can expect faster and more precise shifting and all over a 11-34t range cassette. Shimano finds this rear derailleur to be 58% faster than their RD-R9150 which is a significant feat for the brand making this a component with shifting worthy of any race-winning steed. We can expect shifting to happen more quickly and with less effort with this rear derailleur. Its compact design includes an integrated wireless unit charger and switch and this derailleur also features Shimano's superb E-Tube wiring system so we can customize our preferences to ensure our internally communicating drivetrain does exactly what we expect it to.
Price: $814.99 from Backcountry
| Merchant | Price | |
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| $814.99 | Visit Store |
Shimano's new Dura-Ace Di2 RD-R9150 11-Speed Rear Derailleur boasts a sleek profile that practically hides from the wind and finally brings the Synchronized Shift functionality honed in the trail-focused XTR Di2 system onto the road. Enabling Synchronized...
At a time when electronic drivetrains are gaining unstoppable traction we appreciate that Shimano chose not to neglect its storied pro-level mechanical drivetrain for Di2 making careful meticulous updates that have resulted in subtle but significant...
With the Dura-Ace Di2 groupset Shimano demonstrates how the reinvention of their components has the ability to transform the way we ride. In the reform of Shimano's Dura-Ace line it makes sense that the brand would update their Dura-Ace ST-R9250 Shifter...