The Shimano Dura-Ace RD-R9250 Di2 Rear Derailleur delivers the fastest and most precise shifting in the 12-speed lineup. This medium cage component features carbon fiber construction to keep the weight at a mere 136 grams for elite racing performance.

This black Di2 derailleur provides seamless electronic gear changes for adult road cyclists. Its refined design ensures reliable operation and a clean look for high-end builds using the latest Shimano drivetrain technology.

Quick Facts

Feature	Specification
Drivetrain Speeds	12-Speed Di2 Electronic
Cage Length	Medium Cage
Material	Carbon Fiber
Weight	136g (0.3 lbs)
Mounting Type	Braze-On Mount
Color	Black