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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
Improved driving efficiency and stable shifting
Simply attach the sensor and ride
New design allows for more flexible cable routing design
The result: a cassette that's light
SM-JC41 For internal cable routing
Shimano Di2 Junction A EW90A 3 Port 45 Improved driving efficiency and stableSHIMANO's SM EW90 A 3 port Junction A mounts neatly to the bike stem and connects with E TUBE wires from DI2 shifters and the downtube junction wire. The SM EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch.
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