SHIMANO 3 Port Junction A SM EW90 Q4 26 Clearance e*thirteen's Base pedal features a e*thirteen's Base pedal features a durable composite pedal body and 22 traction pins mechanical disc brake MODEL NO SM EW90 A SERIES DURA ACE 9070 Series Average weight 10 E tube connector (QTY) 0 E tube port (QTY) 3 Charging port (pcs) 1 Firmware update by E TUBE PROJECT ✔ Compatible electric wire EW SD50 Compatible system E TUBE Connector for remote sprinter shifter (QTY) 0 Firmware update by E TUBE Project ✔ Function_Adjust mode display ✔ Function_DI2 Battery level ✔ Function_E TUBE connection ✔ Function_Gear position ✔ Port for remote sprinter shifter (QTY) 0 Position Under stem Type External type Type External type Compatible system E TUBE Compatible electric wire EW SD50 Position Under stem SD300 connector (pcs) 0 SD300 port (pcs) 0 SD50 connector (pcs) 0 SD50 port (pcs) 3 SHIMANO'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