Shimano Dura-Ace R9250 Di2 12-Speed Rim Brake Complete Groupset - 8pcs Kit

Flagship 12-Speed Electronic Shifting: Experience lightning-fast, ultra-precise Di2 electronic shifting tailored for ultimate road racing performance. Upgrade your ride to the pinnacle of road cycling performance with the Shimano Dura-Ace Di2 R9250 12-Speed Rim Brake Groupset. Engineered for serious cyclists and purists who demand the unmatched lightness and aerodynamics of a rim brake setup, this flagship 8-piece bundle delivers instant, effort-free electronic shifting with uncompromising mechanical power. At the heart of the system is Shimano’s refined 12-speed Di2 technology. The dual control levers offer ergonomic perfection and intuitive operation, paired with derailleurs that execute crisp, wireless-protocol shifting across the Hyperglide+ 11-30T cassette. Coupled with the hollow-forged Dura-Ace FC-R9200 crankset, every pedal stroke is converted directly into explosive forward momentum with maximum stiffness and minimal weight. Whether you are rebuilding a custom dream bike or upgrading your race rig, this complete package provides the core engineering excellence that defines the WorldTour peloton. Package Specifications & In The Box Component Model / Spec Description Dual Control Levers ST-R9250 2x12-Speed Di2 Rim Brake STI Levers (Pair) Front Derailleur FD-R9250 Di2 12-Speed Braze-On Front Derailleur Rear Derailleur RD-R9250 Di2 12-Speed Rear Derailleur (Integrated Charging Port) Crankset FC-R9200 12-Speed Hollowtech II (170mm / 50-34T Compact) Cassette CS-R9200 12-Speed Hyperglide+ (11-30T) Chain CN-M9100 XTR/Dura-Ace 12-Speed Quick-Link Chain (116 Links) Brake Calipers BR-R9200 Dual-Pivot Rim Brake Calipers (Front & Rear Pair) Bottom Bracket SM-BB92-41B Press-Fit BB86 Bottom Bracket Note on Di2 Electronic Setup: To complete the full electronic installation, this bundle requires Shimano Di2 EW-SD300 internal wires, a BT-DN300 battery, and an EW-EC300 charging cable (sold separately)