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Shimano SM-JC41 Junction Box For Di2 - Internal

ISMJC41
₹2,670

Seamless Internal Junction for Di2 Electronic Systems

Description

The Shimano SM-JC41 Junction Box is a key component of your internally routed Di2 setup. Designed to be hidden within the bike frame, this junction keeps your electronic cabling organized and out of sight for a clean and professional look.

Central Connection Hub: This internal junction serves as the central point for all EW-SD50 cables connecting your Di2 system—linking the battery, derailleurs and shift levers. It ensures reliable communication between components, supporting seamless electronic shifting performance.

Discreet and Frame-Compatible: Generally positioned inside the seat tube or down tube via the bottom bracket shell, the SM-JC41 remains completely out of view. It’s engineered for use in compatible frames with internal routing and provides a secure, vibration-resistant cable junction.

Reliable, Lightweight Performance: Built with precision and trusted Shimano engineering, the SM-JC41 adds minimal weight while delivering essential functionality. Whether upgrading or building a Di2 bike from scratch, it’s an indispensable part of a clean, integrated electronic drivetrain.

The SM-JC41 is compatible with a wide range of Di2 series, including Dura-Ace 9070, Ultegra 6870/6770, XTR 9050, XT 8050 and Alfine/Nexus Di2 systems.

Features
  • Internal Cable Integration: Designed for internal routing, this junction box delivers a clean look and protects cables inside the frame.
  • Centralized Connection Hub: Connects up to four EW-SD50 wires, enabling communication between Di2 derailleurs, battery and shifters.
  • Frame-Compatible Design: Installs within the frame—typically through the bottom bracket—offering a discreet and vibration-resistant fit.
  • Broad System Compatibility: Works with Di2 series like Dura-Ace 9070, Ultegra 6870/6770, XTR 9050, XT 8050, Alfine and Nexus Di2.
  • Lightweight, Reliable Construction: Shimano’s precision engineering ensures long-lasting functionality without adding excess weight.

Specifications
  • Type: Internal Junction Box
  • Ports: 4 x EW-SD50 Ports
  • Compatibility: Dura-Ace 9070, Ultegra 6870/6770, XTR 9050, XT 8050, Alfine Di2, Nexus Di2
  • Not compatible with: Dura-Ace 7970
Shimano Warranty Information

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We ship across India with free shipping on orders above ₹2,000 (₹99 for orders below ₹2,000). Cash on Delivery is available up to ₹20,000, with additional COD fees based on order value. Orders typically arrive within 3–6 working days, though delays may occur.

Note: Most Shimano products may take longer to ship. View full shipping policy

Returns & Refunds

Here's a quick overview of our return and refund policy:

  • 7-Day Return Window: You can initiate a return within 7 days of receiving your product.
  • Eligibility: Items must be unused, in original condition, with all tags and packaging. Only select items like apparel (helmets, jerseys, gloves, etc.) are eligible.
  • Non-Returnable Items: Wetsuits and items discounted over 5% are not eligible for returns.
  • Compatibility Issues: Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. If you're unsure, please contact us before ordering.
  • Shipping & Processing: Return shipping is to be arranged by the customer. No pickups available.
  • Refund Options: Choose between exchange, store credit, or monetary refund (after deductions for shipping and transaction fees).
  • Order Cancellations: Only possible before the order is processed.

For full details, visit our Return & Refund Policy page.

Shimano SM - JC41 Junction Box For Di2 - Internal | The Bike Affair
Shimano

Shimano SM-JC41 Junction Box For Di2 - Internal

₹2,670

Type

Gear Cable

Specifications

  • Type: Internal Junction Box
  • Ports: 4 x EW-SD50 Ports
  • Compatibility: Dura-Ace 9070, Ultegra 6870/6770, XTR 9050, XT 8050, Alfine Di2, Nexus Di2
  • Not compatible with: Dura-Ace 7970

Features

  • Internal Cable Integration: Designed for internal routing, this junction box delivers a clean look and protects cables inside the frame.
  • Centralized Connection Hub: Connects up to four EW-SD50 wires, enabling communication between Di2 derailleurs, battery and shifters.
  • Frame-Compatible Design: Installs within the frame—typically through the bottom bracket—offering a discreet and vibration-resistant fit.
  • Broad System Compatibility: Works with Di2 series like Dura-Ace 9070, Ultegra 6870/6770, XTR 9050, XT 8050, Alfine and Nexus Di2.
  • Lightweight, Reliable Construction: Shimano’s precision engineering ensures long-lasting functionality without adding excess weight.

The Shimano SM-JC41 Junction Box is a key component of your internally routed Di2 setup. Designed to be hidden within the bike frame, this junction keeps your electronic cabling organized and out of sight for a clean and professional look.

Central Connection Hub: This internal junction serves as the central point for all EW-SD50 cables connecting your Di2 system—linking the battery, derailleurs and shift levers. It ensures reliable communication between components, supporting seamless electronic shifting performance.

Discreet and Frame-Compatible: Generally positioned inside the seat tube or down tube via the bottom bracket shell, the SM-JC41 remains completely out of view. It’s engineered for use in compatible frames with internal routing and provides a secure, vibration-resistant cable junction.

Reliable, Lightweight Performance: Built with precision and trusted Shimano engineering, the SM-JC41 adds minimal weight while delivering essential functionality. Whether upgrading or building a Di2 bike from scratch, it’s an indispensable part of a clean, integrated electronic drivetrain.

The SM-JC41 is compatible with a wide range of Di2 series, including Dura-Ace 9070, Ultegra 6870/6770, XTR 9050, XT 8050 and Alfine/Nexus Di2 systems.

View product