
E-Tube kits, batteries, adaptors and chargers sold separately
-EW-SD50
-Internal Frame
-This is the Shimano Ultegra Di2 Internal Junction Box. This box is referred to as the junction box ''B'' on a Di2 build. The SM-JC41 is for use with internal wiring setups.
-Available for Pickup within 2 to 1 businesses days