Shimano EW90-A Di2 Cockpit Junction Box 3-Port – OEM E-Tube, LED Battery

Optimize your Shimano Di2 electronic shifting system with the Shimano EW90-A Di2 Cockpit Junction Box, a vital component designed for professional riders and cycling enthusiasts seeking smooth, reliable, and high-tech connectivity. Engineered with precision, this junction box offers a streamlined solution for integrating up to three SD50 E-tube wires, ensuring your electronic shifting setup delivers optimal performance and flawless communication between shifters and the frame junction box.

Materials & Build Quality:

Constructed with durable, high-grade materials, the Shimano EW90-A Junction Box guarantees long-lasting performance in all riding conditions. Its robust design protects delicate electronic components while maintaining a sleek and professional aesthetic, compatible with high-end road bikes, triathlon setups, and racing bicycles.

Performance & Engineering:

Designed specifically for Shimano’s Di2 electronic shifting systems, the EW90-A provides a stable, reliable connection between shifters and the bicycle’s internal wiring. Featuring an internal battery charging port, it simplifies maintenance and ensures your system remains powered and ready for every ride. The rear derailleur adjustment mode allows for fine-tuning directly through the junction box, improving shifting precision without additional tools.

Components & Technology:

This OEM front wiring kit is compatible with Shimano Dura-Ace Di2 9070 groups and other Di2 systems utilizing the same firmware version. It includes a Junction Box Band (CY9082) and Junction Box Hook Mounting Plate (CY9081) for secure installation on your bike’s cockpit. An LED battery charge level indicator provides real-time status updates, so you can monitor power without hassle. Note: Not compatible with Flight Deck systems, ensuring seamless integration with existing Di2 setups.

Style & Use Case:

Ideal for professional competitions, serious training, and custom bike builds, the Shimano EW90-A Junction Box ensures a clean cockpit setup with minimized cable clutter. Its versatile design supports various bike styles and rider preferences, making it perfect for riders demanding precise electronic shifting control, durability, and advanced system diagnostics.

Innovative & Differentiating Features:

– LED battery charge indicator for quick system health checks

– Rear derailleur adjustment mode for on-the-fly tuning

– Internal charging port for easy maintenance

– Includes essential mounting hardware for streamlined installation

– Ensures firmware consistency across all Di2 components for optimal functionality

Upgrade your electronic shifting system with the Shimano EW90-A Di2 Cockpit Junction Box-engineered for reliability, performance, and seamless integration. Maximize your bike’s electronic system potential and enjoy precise, effortless gear changes on every ride.

• Enhanced connectivity for Shimano Di2 electronic shifting systems, the EW90-A 3-Port Cockpit Junction Box features precision-engineered internal components designed for seamless communication between up to three SD50 E-tube wires, ensuring reliable signal transmission. Constructed with high-quality durable materials, this junction box is built to withstand the rigors of intense cycling and diverse riding conditions, offering long-lasting performance. Its compact, OEM-compatible design integrates seamlessly into Dura-Ace Di2 9070 setups, providing a clean and aerodynamic cockpit appearance while simplifying cable routing through its internal battery charging port and mounting options. Advanced features include an LED battery charge indicator and rear derailleur adjustment mode, enabling intuitive system management and maintenance. Perfect for high-performance road and racing bicycles, the Shimano EW90-A Junction Box enhances ride precision, system reliability, and ease of use for serious cyclists seeking innovative, technology-driven solutions.