Shimano EW90-A Di2 Cockpit Junction Box 3-Port Grips It is a complete post-ride

It is a complete post-ride recovery drink built on the science of what your body actually needs in the 30-minute window after a hard effort: glycogen replenishment

Run with sealant for the most reliable setup

4 inch size fits the most common trail tire widths on 26-inch mountain bikes

and tubeless compatibility lets you fine-tune pressure for whatever terrain you are riding

electrolytes

Shimano EW90-A Di2 Cockpit Junction Box 3-Port Grips It is a complete post-rideWhat Is the Shimano EW90 A Di2 Junction Box For? The Shimano EW90 A is a 3 port Di2 cockpit junction box for older generation Di2 systems including Dura Ace 9070 and Ultegra 6870, mounting at the stem or handlebar to serve as the central wiring hub connecting derailleurs and battery via EW SD50 E Tube wires. The mode button built into the EW90 A allows Di2 settings adjustment and component syncing without a computer, and the display port enables