Shimano EW90-A Di2 Cockpit Junction Box 3-Port Grips Enhanced chain retention is achieved

Enhanced chain retention is achieved through an extended inner plate design that firmly holds cassette and chainring teeth

electrolytes

The BOA Closure System dials the bag tight against your saddle rails with a single ratcheting dial that delivers more than 15 times the holding force of Velcro

Dumonde Tech recommends rinsing thoroughly with soap and water after application

SILCA calls the broader approach wax optimization

Shimano EW90-A Di2 Cockpit Junction Box 3-Port Grips Enhanced chain retention is achievedWhat 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