TakeVuelta2 hours ago
FCC filings confirm the Shimano Dura-Ace R9300 stays semi-wireless — 13 speeds, but still cable-connected derailleurs and an internal battery, while SRAM Red and Campagnolo Super Record 13 have gone fully wireless. Shimano isn't chasing that architecture; it's betting riders would rather deal with a redesigned rear derailleur charging port than an outboard battery.
The R9300's charging port has swapped its pin layout from a horizontal line to a square — a change nobody's explained yet. It could mean a higher-capacity or faster-charging battery, or it could simply break compatibility with existing Di2 chargers and cables. Either way, current Dura-Ace R9200 owners are looking at new hardware, not a drop-in upgrade. That's the real headline here, not the jump to 13 speeds.
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