Cycling · Groupset · Shimano
Shimano Ultegra Di2 12-speed
A 12-speed electronic-only road groupset — Shimano's second-tier offering — featuring semi-wireless Di2 shifting, hydraulic disc brakes, and Hyperglide+ drivetrain technology, aimed at serious road c…
Released 2021Quick facts · not yet fully researched

Quick specs
- Brakes
- Hydraulic disc (flat mount)
- Speeds
- 12
- Shifting
- Semi-wireless Di2 (wireless shifters, wired derailleurs to internal battery)
- Cassette Range
- 11-30T or 11-34T
- Drivetrain Tech
- Hyperglide+ (borrowed from Shimano MTB)
- Chainring Options
- 50/34T or 52/36T (also 46/36T)
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