Skip to content
Free Shipping on Orders over $95 and Easy Returns!
Free Shipping on Orders over $95!
Shimano SM-EW90-B Di2 Junction A 5 Port for TT
Style Number:

Shimano SM-EW90-B Di2 Junction A 5 Port for TT

by Shimano
$179.99 - $179.99
$179.99
$179.99 CAD
$179.99 - $179.99
$179.99 CAD

Notify me

Your Contact Information:

Product Details:

Price Match

If you find a lower advertised price (including shipping, handling and delivery) that is currently available on an identical branded item with the same features from a local retail competitor, compete this form and Enduro Sport will do our best to match that total price. Please read the complete conditions below.

Your Contact Information:

Price Match Details:

Email offers can be forwarded to shop@endurosport.com (please make sure your send them from the same email address as you entered on this form).

With Shimano's simplified and improved front junction box (junction A) for 9070 Dura Ace Di2 and 6870 Ultegra Di2, you now have 5 ports for use with both drop bar and TT shifters simultaneously. The new 9070 unit utilizes a rubber strap that cleanly and aerodynamically fastens underneath the stem. Better still, the 5-port junction box has a charging port that makes it possible to charge both internal and external batteries without having to remove them from the bike.