Shimano Dura-Ace Di2 RD-R9250 přehazovačka

Even better shifting performance

With the fastest shifting operations in the largest DURA-ACE gear range to date, the Shimano RD-R9250 rear derailleur opens up chances of victory or opportunities for personal best times.

The DURA-ACE RD-R9250 rear derailleur features an integrated charging port and a wireless signal transmission unit, enabling super-fast and precise shifting. Using a single cage length, the derailleur shifts on cassettes from 11-28 to 11-34 teeth, further increasing the versatility of the world's best road cycling component group.

Highlights

• Fastest derailleur function ever, 58% faster than FD-R9150
• Compact design with integrated unit for wireless signal transmission, charger and switch
• LED status indicator (battery indicator, pairing, setting mode, etc.)
• Larger gear range (largest sprocket: 34 teeth)
• CFRP derailleur cage
• Top Normal version

specification

Technologies used

In this chapter, we explain the technologies that the manufacturer uses in this product.

Shimano Shadow RD
With its sophisticated technology, the Shimano SHadwo RD rear derailleur is particularly well-suited for a more aggressive riding style. Its extremely low profile brings with it a number of advantages. Thanks to its flat design and single-tension construction, the derailleur won't hit the chainstay, even under the roughest conditions. Shifting is smooth and quiet.

Direct Mount Rear Derailleur
With a mounting option for Shimano Shadow RD and Shimano Shadow RD+, rear wheels are easier to remove. The direct mounting function is designed for a wide range of modern frames with long chainstays, especially mountain bikes with thru-axle dropouts. It allows for flexible frame design, requires no special tools (M10x1 mounting bolt, no E-clip), and makes installing the rear wheel easier.

E-Tube Project - settings adjustable via the app
The E-Tube Project mobile app, developed by Shimano, offers features for customizing the bike, updating firmware, and performing maintenance via a wireless connection. More detailed bike maintenance is possible by connecting the bike to the E-Tube Project app for Windows V4 using a cable.

Scope of delivery

• 1 x Shimano Dura-Ace Di2 RD-R9250 rear derailleur (see item description for details)