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SKU: CY9079

Shimano EW90-B Di2 Cockpit Junction Box 5-Port - OEM E-Tube Wiring for Dura-Ace Di2 9070, Internal Battery Charging, LED Charge Indicator, High-Performance Electronic Shifter Integration, Compatible with Di2 Firmware System

Regular price $155.59
$155.00 Sale price $155.59 Regular price
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This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description

Upgrade your Shimano Di2 electronic shifting system with the Shimano EW90-B Di2 Cockpit Junction Box - a vital component engineered for seamless connectivity and optimal performance. Designed specifically for high-performance road and mountain bikes, this 5-port cockpit junction box connects up to two pairs of Di2 shifters to the frame junction box, ensuring smooth, reliable electronic shifting.

Materials and Build Quality:

Constructed with durable, high-quality plastics and precision-engineered connectors, the Shimano EW90-B is built to withstand the rigors of aggressive riding and variable weather conditions. Its robust design ensures long-lasting performance in both racing and off-road environments.

Performance & Engineering:

This OEM front wiring kit is compatible with Shimano Dura-Ace Di2 9070, offering an integrated solution for clean cable management and enhanced aerodynamics. The junction box features an LED battery charge level indicator, allowing cyclists to monitor power status easily during rides. Additionally, it supports rear derailleur adjustment mode, providing precise gear tuning for optimal shifting performance.

Components & Technology:

Equipped with five SD50 E-tube ports, the EW90-B enables reliable data transfer and power distribution across multiple Di2 components. The internal battery charging port simplifies maintenance, ensuring your system stays powered without hassle. The kit includes a Junction Box Band (CY9082) and a Junction Box Hook (Mounting Plate, CY9081), facilitating secure and clean installation onto your bike cockpit.

Style & Use Case:

Designed for serious cyclists seeking a sleek, integrated electronic shifting setup, this junction box offers a clean cockpit look with minimal wiring clutter. Ideal for road racers, triathletes, and mountain bikers aiming for precise shifting control and reliable performance in competitive or demanding conditions.

Innovative & Differentiating Features:

The Shimano EW90-B features an internal battery charge port for streamlined charging and is compatible with the Di2 system checker for firmware updates, ensuring your system stays current and free of malfunctions caused by firmware mismatches. Note that all Di2 components must share the same firmware version to operate flawlessly.

Enhance your Shimano Di2 system with the Shimano EW90-B Cockpit Junction Box - the perfect solution for professional-grade electronic shifting, superior cable management, and effortless system maintenance. Upgrade your ride to the next level of electronic performance today!

  • Seamlessly connect up to two pairs of Shimano Di2 shifters with the SM-EW90-B 5-Port Cockpit Junction Box, designed for reliable internal routing and streamlined cockpit integration.
  • Constructed with durable, high-quality materials to ensure long-lasting performance and corrosion resistance in all riding conditions.
  • Engineered for precise electronic shifting with advanced E-tube technology, enabling smooth, responsive gear changes across Shimano's Di2 9070 Dura-Ace system.
  • Designed for OEM installation on road and gravel bikes, this junction box features a sleek, internal battery charging port and LED charge indicator for convenient system management.
  • Includes essential mounting components like the Junction Box Band and Hook, making installation straightforward while supporting firmware synchronization for optimal system compatibility.
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Customer Reviews

Based on 11 reviews
73%
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27%
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S
Shay

I upgraded my gen 1 di2 with some new parts it was a very easy upgrade.;

R
Raleigh Littles

Bought this for a Canyon Endurace that sadly only came with the 3-port junction box. Works flawlessly so far. Make sure to connect the junction box to your PC and update the firmware once you get it.

Additionally I recommend *not* using the given built-in mount and instead purchasing something like this: https://www.amazon.com/Fouriers-Battery-Adapter-Shimano-Junction/dp/B07718PLMZ . The built-in mount is kind of flimsy and an external mount not only looks cleaner but also frees up your stem for other accessories.;

f
fuel98rider

It’s a necessary part especially if you don’t have a handlebar that allows the end junction box. It is easy to install and works well to charge the system and program/adjust the shifting. I did not like the adjustable strap to mount it and instead purchased the K-Edge mount to install it directly below the stem.;

M
Mr Santos

Shimano great product;

F
Francisco Lima

Súper;