Free Shipping on Orders Over $99

Free Shipping Policy

Free Shipping applies to all orders placed for $99 and above
(pre-tax value). Some restrictions apply:

  • Offer valid in the Lower 48 States only
  • Excludes Travel Cases and some other oversize items (prices can be calculated in the cart before checkout)

Shimano E-Tube SM-EW90A Cockpit Junction Box 3-Port

SM-EW90-B 5-Port Cockpit Junction Box connects Di2 shifters to the frame junction box via SD50 E-tube wires. The 3-port Cockpit junction box does not allow for the multiple satellite shifting options like the 5-port but it is a little lighter and sleeker.


  • OEM front wiring kit for Dura-Ace Di2 9070 and Ultegra 6870
  • LED battery charge level indicator
  • Rear derailleur adjustment mode
  • Internal battery charging port

All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions.

Sale Price
Reg Price $119.95
Item is in stock


No reviews. Be the first. Write Review