Shimano Ultegra Di2 Junction external

Ultegra Di2 Junction External Set

The Junction Box is the Ultegra Di2 indicator/control centre for bike frames that don't have dedicated internal cable routing. This Junction Box makes it incredibly easy to adjust the gears for perfect performance. As is the way when such innovations are developed, this Ultegra component is actually smaller, neater and lighter than the Shimano Dura-Ace original.

• This Junction Box can be fitted under the bottom bracket or to a bottle cage.
• Offers +/- 15 step rear mech adjustment - each step moves the mech 0.3mm.
• Smart waterproof connectors make the junction box simple to fit and reliable in action.

This kit comprises:

• SM-JC40 bottom bracket junction.
• SM-BMR1 long external type bottle cage battery mount.
• EW-SD50 individual cables: 1 x 1000 mm, 1 x 500 mm, 2 x 300 mm.
• SM-EWC2 stick-on wire covers: 3 x 300 mm, 3 x 50 mm.
• Reliable and secure water resistant connectors.

Note: This kit does not include the handlebar cable set required to connect the shifters to the battery indicator junction box.

Shimano