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

Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Evolved Di2 Technology & Precision Shifting

The Dura-Ace RD-R9250 rear derailleur features a Shadow design and comes with integrated D-FLY connectivity so you can pair with Bluetooth & ANT+ compatible devices. It connects to the battery via an E-Tube wire.

Dura-Ace R9200’s new Di2 platform showcases Shimano’s most advanced drivetrain technology and shifting performance to date. Dura-Ace delivers 58% faster rear shifting and 45% faster front shifting compared to the current wired R9100 Di2 system. Shimano’s wireless Di2 processing technology, developed in-house by Shimano, increases transmission speed and performance, offering reliable, fast shifts every single time. Further Di2 refinements include a charging port and D-FLY wireless connectivity integrated into the rear derailleur.

A new Shimano E-TUBE App (version 4.0.0) offers intuitive operations for personalizing the Dura-Ace R9200 drivetrain. Offering a suite of customizable, riders can choose between different shift speeds, customize shift button mapping (what buttons perform which functions), program different automatic shift modes like Synchro and Semi-Synchro shifts, fine-tune shifting, and connect with third party bike computers.

Features

• Shimano SHADOW Rear Derailleur Technology
• Integrated D-FLY connectivity
• LED indicator (battery indicator, pairing, adjust mode, etc.)
• Compatible with 11-28, 11-30, and 11-34T cassettes
• Compact design includes an integrated wireless unit, charger, and switch
• Weight: 215g
• Direct Mount compatible
• Includes protective CFRP rear derailleur pulley plate

The product weight specified is an approximate weight based on the manufacturer’s specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

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Specifications