Shimano Dura-Ace Di2 R9150 11-Speed Rear Derailleur | Precision Electronic Shifting for Elite Road Performance
High-End Di2 Rear Derailleur for Smooth, Fast & Reliable Shifting
The Shimano Dura-Ace Di2 R9150 11-Speed Rear Derailleur is engineered for professional-level road cycling, delivering ultra-fast, precise electronic shifting with minimal effort. As part of Shimano’s flagship Dura-Ace Di2 groupset, this rear mech combines cutting-edge technology, lightweight construction, and unmatched drivetrain efficiency.
- Shimano Dura-Ace R9150 Di2 rear derailleur
- Fast, precise electronic shifting performance
- Synchro Shift compatibility
- Lightweight carbon, titanium, and alloy construction
- Shadow design for protection and aerodynamics
- Smooth, quiet, and efficient drivetrain operation
Perfect for road racing, endurance rides, and high-performance cycling, this derailleur ensures seamless gear transitions in all conditions.
Shimano Di2 Technology | Effortless Electronic Shifting
Powered by Digital Integrated Intelligence (Di2), this derailleur offers:
- Instant, accurate gear changes at the press of a button
- Consistent performance without cable stretch, corrosion, or contamination
- Smooth, quiet operation for maximum drivetrain efficiency
- Fully compatible with Shimano E-Tube systems
Experience flawless electronic shifting every time you ride.
Synchronised Shift for Intelligent Gear Changes
The Shimano Synchro Shift system automatically selects the optimal gear combination:
- Seamlessly coordinates front and rear derailleur shifts
- Maintains ideal cadence and efficiency
- Simplifies shifting for a more intuitive riding experience
Shadow Low Profile Design for Aerodynamics & Protection
- Low-profile Shadow design reduces exposure to impacts
- Integrated derailleur protection (fuse function) safeguards internal components during crashes
- Improved aerodynamics for race-focused performance
Lightweight Carbon & Titanium Construction
Built for elite performance with premium materials:
- Carbon fibre pulley plates for stiffness and weight reduction
- Titanium B-axle bolt for additional weight savings
- Cold-forged aluminium body for strength and durability
- Approximate weight: 204g
Smooth, Low-Friction Operation
- Fluorine-coated pivot bushings for reduced friction
- High-performance DuPont Zytel pulleys for quiet, long-lasting operation
- Optimised for efficient power transfer and reduced drivetrain wear
Wide Gear Compatibility & Versatility
- Compatible with 11-speed Shimano Di2 E-Tube systems
- Supports wide-range cassettes up to 11-30T
- Max front difference: 16T
- Total capacity: 35T
- Direct mount compatible
Suitable for both compact and standard road setups.
The Shimano Dura-Ace Di2 R9150 Rear Derailleur delivers elite-level Shimano road cycling performance from industry-leading Di2 electronic shifting technology. It is lightweight and durable for competitive riding, enhances speed, efficiency and control, and is trusted by professional cyclists worldwide.