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Shimano Dura-Ace Di2 RD-R9250 12-Speed Rear Derailleur

IRDR9250F
₹62,610

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Centralized Wireless Shifting with Elite Race Precision

Overview

The Shimano Dura-Ace RD-R9250 rear derailleur goes beyond just shifting—it serves as the central hub of the Di2 12-speed system. It integrates the system's charging port and wireless connectivity unit into a single compact body, offering clean setup and hassle-free connection with the rest of your drivetrain.

Fast, Precise, Race-Ready Shifting: Built for elite-level racing and high-performance road riding, the RD-R9250 delivers lightning-fast shifts with pinpoint accuracy. Its advanced motor and refined link design ensure smooth transitions across the cassette—even under load—so you never miss a beat during attacks or sprints.

Shadow Profile for Sleek Aerodynamics: With a low-profile Shadow design, the RD-R9250 sits closer to the frame, improving aerodynamics while reducing exposure to damage. The sleek shape blends into modern race frames and contributes to a quieter, more streamlined ride feel.

Versatility in a Single Cage Length: The derailleur features a single cage length that’s compatible with a wide range of cassettes, accommodating low sprockets from 28T to 34T. This flexibility makes it perfect for riders who want pro-level performance across everything from flat crits to hilly gran fondos.

Whether you're upgrading your current Di2 setup or building a dream race bike, this RD-R9250 rear derailleur brings precision and simplicity together in one smart unit.

Features
  • Integrated System Hub: Acts as the Di2 system’s brain, integrating charging port, wireless unit and LED indicators in one compact body.
  • Fastest Ever Shifting: Achieves 58% faster shifting speed compared to RD-R9150 for race-ready performance under any condition.
  • Shadow Profile Design: Low-profile construction improves aerodynamics and reduces exposure to impacts for cleaner, quieter operation.
  • Wide Cassette Compatibility: Single cage design supports cassettes from 11-30T to 11-34T, making it versatile for mixed terrain use.
  • Direct Mount Ready: Compatible with conventional and direct-mount hanger systems for simpler setup and frame flexibility.
  • Durable Construction: Carbon-reinforced derailleur plate and fluorine-coated link bushings ensure long-lasting smooth performance.
  • Smart Wireless Features: Bluetooth and ANT+ enable battery status, gear position and firmware updates via E-Tube Project.
  • LED Status Display: Easily check connection, battery life and pairing via integrated LED on the derailleur body.

Technologies

  • Shimano Shadow RD: A super low-profile design that improves aerodynamics and prevents derailleur contact with the chainstay for quieter operation.
  • Direct Mount Compatibility: Simplifies wheel removal and aligns seamlessly with modern frame designs using thru-axles and large-section chainstays.

Specifications
  • Model No: RD-R9250
  • Series: Dura-Ace
  • Color: Series Color
  • Rear Speeds: 12
  • RD Construction: Shimano Shadow RD
  • Mount | Direct Attachment (Conventional): Yes
  • Mount | Direct Mount: Yes
  • Max Front Difference: 16T
  • Total Capacity: 37T
  • Low Sprocket | Max: 34T
  • Low Sprocket | Min: 30T
  • Top Sprocket | Max: 11T
  • Top Sprocket | Min: 11T
  • Fluoric Coated Link Bushings: 4
  • Pulley | Guide Pulley Bearing: Yes
  • Pulley | Tension Pulley Bearing: Yes
  • Pulley | Teeth: 11
  • Pulley | Sunken Type Pulley Screw: Yes
  • B-Axle | Hollow Axle: Yes
  • B-Axle 2 | Hollow Axle: Yes
  • Di2 Connectivity Wired | Di2 Shifting: Yes
  • Di2 Connectivity Wireless | Di2 Shifting: Yes
  • Di2 Connectivity Wireless | Bluetooth LE Custom (*1)|Adjust Mode Information, Di2 Battery Level, Gear Position: Yes
  • Di2 Connectivity Wireless | Bluetooth LE Custom (*1)|Shimano E-Bike Systems Data Items (*3): Yes
  • Di2 Connectivity Wireless | Bluetooth LE Custom (*1)|Compatible With E-Tube Ride, Project: Yes
  • Di2 Connectivity Wireless | ANT Private (*2) | Adjust Mode Informatioin, Battery Level, Gear Position: Yes
  • Di2 Connectivity Wireless | ANT Private (*2)|Shimano E-Bike Systems Data Items (*3): Yes
  • Firmware Update By E-Tube Project: Yes
  • SD50 Port (Pcs): 0
  • SD300 Port (Pcs): 1
  • SD50 Connector (Pcs): 0
  • SD300 Connector (Pcs): 0
  • LED for System Status: Yes
  • Charging Cable: EW-EC300
  • Average Weight: 215 g
  • Remarks: w/o Bracket Spec Available

Shipping, Returns & Refunds

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.

Shimano Warranty Information