SHIMANO E-Tube Di2 Junction Box

Product description

• SM-JC41 Di2 Internal Frame Junction Box features a durable, lightweight polymer construction designed for seamless integration within your bicycle frame, ensuring reliable electrical connections and optimal performance.
• Engineered for Di2 electronic shifting systems, this 4-port junction box provides efficient wiring management, connecting the front and rear derailleurs, cockpit junction box, and battery mount with precision, supporting smooth and responsive gear shifts.
• Utilizes advanced E-tube wiring technology, allowing for easy plug-and-play setup and maintenance, while minimizing cable clutter and enhancing the bike's sleek aesthetic.
• Compatible with all Di2 components, this junction box ensures firmware consistency for stable operation across your electronic drivetrain, with firmware updates easily managed via the Di2 System Checker.
• Ideal for high-performance road, mountain, or gravel bikes seeking reliable internal wiring solutions, the SM-JC41 junction box combines innovative engineering and durable materials for long-lasting, precise electronic shifting performance.