Shimano SM-JC41 Di2 Internal Frame Junction Box - 4-Port E-Tube Connector Bar Clamp Diameter (mm)_22.2mm ensuring you maintain peak performance

ensuring you maintain peak performance on the bike while enjoying all-day comfort

enabling anglers to keep essential tools

and precision drag systems

Designed for Style and Versatility

Shimano SM-JC41 Di2 Internal Frame Junction Box - 4-Port E-Tube Connector Bar Clamp Diameter (mm)_22.2mm ensuring you maintain peak performanceUpgrade your Shimano Di2 eTap electronic shifting with the Shimano SM JC41 Di2 Internal Frame Junction Box an essential component engineered for seamless integration and reliable performance. Crafted from high quality, durable materials, this 4 port junction box features precision engineering to ensure smooth communication between your electronic drivetrain components. Designed specifically for internal frame installation, the SM JC41 Junction Box