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

Centralized Wireless Shifting with Elite Race Precision

12 Speed
Rear

₹62,610

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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.

Product details

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

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.

Warranty and support

Covered by the manufacturer's warranty. Warranty claims go through us and we deal with the brand for you.

Shimano warranty terms

Questions after delivery? Ask TBA Guide or WhatsApp us.

Shipping and returns

We ship across India. Shipping is free on orders above ₹2,000 and ₹99 below that. Cash on delivery is available on orders up to ₹20,000, with a COD charge that depends on the order value. For a delivery estimate, enter your pincode in the box above the add-to-cart button: it shows the courier's own estimate for your address, not a promised date. If a parcel is held up we chase the courier until it is delivered. Full shipping policy

Most Shimano products take a little longer to ship.

Returns can be started within 7 days of delivery on unused items in their original condition with all tags and packaging. Apparel, helmets, gloves and similar items are returnable; wetsuits and products discounted by more than 5% are not. Compatibility questions are not grounds for a return unless our listing was wrong, so ask us before you order if you are unsure. Return shipping is arranged by you; on an accepted return you can choose an exchange, store credit or a refund after shipping and transaction charges. Orders can be cancelled only until they are processed. Full return and refund policy