Shimano Junction Di2 (A) SM-EW90-B Master Lock Best of all

Best of all

The PowerTruss sole design improves stiffness without adding significant weight

which protects against cuts as well as improved stability at low pressure riding and contribute to make the carcass air tight when used with liquid sealant

Dawes thought what better model to electrify

The screw-on endcaps are integrated in the design and prevent the grips from slipping

Shimano Junction Di2 (A) SM-EW90-B Master Lock Best of allDescription SHIMANO's SM EW90 B 5 port Junction A mounts neatly to the bike stem and connects with E TUBE wires from DI2 shifters, accessory shifters, and the downtube junction wire. The SM EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch. MODEL NO SM EW90 B SERIES DURA ACE 9070 Series Average weight 13 Type External type Position Under stem Compatible system E TUBE Compatible electric wire