SHIMANO SM-EW90 E-Tube Cockpit Junction Boxes Bicycle ComputersSHIMANO SM EW90 E Tube Cockpit Junction Boxes Bicycle Computers Centralize your Di2 cockpit wiring with Shimanos 5port junction box, designed for seamless integration of multiple shifters and components. Best for Riders building or upgrading a Shimano Di2 electronic shifting system Cyclists using DuraAce Di2 9070 or compatible setups Mechanics seeking a reliable OEM front wiring solution Not ideal for Mechanical shifting systems Flight Deck

reduced weight

the compact design offers a comfortable riding experience: road shock and vibrations are fully damped

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cable rash

stylish solution that does not compromise on safety

OEM Front Wiring Kit: Designed for Dura‑Ace Di2 9070 systems

Its design features replaceable components including the B-Knuckle

Compatibility: Optimized for Oakley goggles and audio systems

Sustainable Materials & Specs ✅

proving its effectiveness whether you're pulling a demanding lead-out train or navigating the final turns of a bell lap

It's a known fact that clear vision is imperative to ensure your safety in the great wide open

All-Conditions Ready: Designed to perform in various lighting and weather conditions (specific tints/features may vary by shield option