Shimano Dura-Ace Di2 RD-R9250 12-Speed Rear Derailleur E-Tube
Precision, Performance & Wireless Innovation – The Ultimate Rear Derailleur for Road Cycling
The Shimano Dura-Ace RD-R9250 Di2 Rear Derailleur is the intelligent centerpiece of Shimano’s latest 12-speed Di2 drivetrain. With wireless connectivity, lightning-fast shifting, and ultra-slim Shadow design, this rear derailleur delivers race-proven efficiency, seamless integration, and elite-level performance.
Digital Integrated Intelligence (Di2) – Instant Electronic Shifting
Experience effortless, precise gear changes with Di2 digital technology. A single touch triggers fast, programmed gear transitions with exceptional smoothness, no cables, no lag, no missed shifts.
Centralised Wireless System Control
Now the brain of the Di2 system, the RD-R9250:
- Connects wirelessly to Di2 shifters
- Functions as the charging port for the system
- Provides ANT+ compatibility for pairing with third-party cycling computers and power meters
- Eliminates the need for a separate handlebar junction box
A built-in LED and button allow you to manage synchronised shifting, system settings, and battery status directly from the derailleur.
Synchronised Shift Compatibility
The RD-R9250 supports Shimano’s Synchronized and Semi-Synchronized Shifting, intelligently selecting the optimal front or rear gear based on cadence and terrain, maximising efficiency with minimal input.
Lightweight, Durable Construction for Pro-Level Performance
- Shadow RD low-profile design protects from impacts and reduces chain slap
- Full carbon fibre pulley plates boost stiffness and minimise weight
- Titanium B-axle bolt shaves off grammes
- Cold-forged aluminium link plates ensure strength and long-term durability
- Self-lubricating fluorine-coated bushings reduce friction for silky-smooth shifting
- High-durability DuPont Zytel pulley wheels minimise noise and wear
Wide Gear Compatibility & Modern Efficiency
- Supports 12-speed cassettes up to 11-34T, ideal for both traditional and compact road setups
- Fully compatible with Shimano E-Tube Di2 12-speed systems
Whether you’re racing, training, or riding long-distance, the Shimano Dura-Ace RD-R9250 12-Speed Di2 Rear Derailleur offers unmatched performance, intelligent control, and next-generation drivetrain efficiency.