Shimano | Di2 Sm-Ew90 Junction Box A 5-Port

Shimano | Di2 Sm-Ew90 Junction Box A 5-Port Di2 SM-EW90 Junction Box A Expand your secondary shift options with the Di2 SM-EW90 Junction Box. The junction box mounts directly below the handlebar, making wiring up a set of secondary shifters easy and making it all possible with minimal cabling. Available in a 3 or 5 port version, the SM-EW90 is the gateway to the ultimate Di2 expansion. Features: Expands Di2 systems to accomodate secondary shift buttons 3 or 5 port version Acts as a charging port for 's internal SM-BTR2 Di2 battery (not included). | | Di2 Sm-Ew90 Junction Box A 5-Port Retail Price: $155.00, Sale Price: $129.99 a 16% savings! Order Online Here UPC: 689228986398 SKU: EL235E00 5_USA_FREE

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Comprehensive Review of Shimano Di2 SM-EW90 Junction Box A (5-Port)

The Shimano Di2 SM-EW90 Junction Box A (5-Port) is an essential component for cycling enthusiasts looking to enhance their electronic shifting experience. Designed to seamlessly integrate with Shimano's Di2 (Digital Integrated Intelligence) systems, this junction box serves as a key expansion point for secondary shift options.

Key Features

• Expansion Capability: The SM-EW90 Junction Box allows users to add secondary shift buttons, offering greater versatility in shifting.
• Port Options: Available in both 3-port and 5-port versions, the 5-port model provides ample connectivity for additional components.
• Convenient Mounting: The junction box mounts directly below the handlebar, facilitating a clean and organized wiring setup.
• Charging Port: It acts as a charging port for Shimano’s internal SM-BTR2 Di2 battery (battery not included), ensuring that your shifting system remains powered.
• Minimal Cabling: The design minimizes excess cabling, contributing to a tidy and efficient bicycle setup.

Benefits

One of the standout benefits of the SM-EW90 Junction Box is its ability to broaden the functionality of the Di2 system. Riders can easily add multiple shifters, making it easier to change gears from different positions on the bike, which is particularly useful in competitive racing or varied terrain. The integration of a charging port eliminates the need for separate charging solutions, streamlining the maintenance process for users.

Potential Drawbacks

• Cost: As a premium component, the SM-EW90 may be considered expensive for some users, especially when compared to traditional mechanical shifting systems.
• Compatibility: Users must ensure compatibility with existing Di2 systems, as this junction box is specifically designed for Shimano's electronic shifting technology.
• Installation Complexity: While it simplifies wiring, installation may still require technical expertise, especially for those unfamiliar with electronic components.

Comparison to Similar Products

When compared to other junction boxes in the market, such as the SRAM eTap AXS junction box, the Shimano SM-EW90 offers superior integration with the Di2 system's advanced features. However, SRAM's system excels in wireless shifting capabilities, which may appeal to users seeking a completely cable-free setup. The choice between these products largely depends on personal preference and existing equipment.

Practical Tips for Use

1. Optimal Positioning: Position the junction box in a place that allows easy access to secondary shifters without interfering with your riding posture.
2. Regular Maintenance: Regularly check the connections and wiring to ensure they remain secure and free from damage.
3. Battery Management: Keep an eye on battery levels and use the junction box to charge the SM-BTR2 battery regularly for uninterrupted performance.

Complementary Products

• Shimano SM-BTR2 Battery: This is the recommended battery for use with the SM-EW90. It ensures compatibility and provides the necessary power for the Di2 system.
• Shimano Di2 Shifters: Adding Shimano’s secondary shifters allows for expanded control and flexibility, especially useful in competitive cycling scenarios.

These products work well together to create a fully optimized electronic shifting system, enhancing overall performance and user experience.

Current Trends and Innovations

The trend towards electronic shifting systems continues to grow, with more cyclists embracing the precision and reliability that Di2 systems offer. Innovations such as wireless connectivity and integration with smart devices are becoming more common. The Shimano SM-EW90 fits into this trend by allowing users to expand their existing systems and leverage the advantages of modern technology without the clutter of additional cables.

Overall, the Shimano Di2 SM-EW90 Junction Box A (5-Port) is a smart investment for any cyclist looking to enhance their electronic shifting capabilities and streamline their bike's setup.