Shimano Di2 SM-EW90-B JUNCT A 5-PRT

Upgrade your ride with SHIMANO's SM-EW90-B 5-port Junction A for easy access and control. Connect DI2 shifters, accessory shifters, and downtube junction wire for seamless gear changes. Featuring a battery level indicator, charging port, and gear index setup switch, this junction box is a must-have for any adventurous cyclist!

Features

• Compatible with SD50 wires