---
product_id: 2424832
title: "Shimano Ultegra Di2 Internal Routing Junction Box"
brand: "shimano"
price: "E£ 3955"
currency: EGP
in_stock: true
url: https://www.desertcart.com.eg/products/2424832-shimano-ultegra-di2-internal-routing-junction-box
store_origin: EG
region: Egypt
---

# Seamless electronic shifting integration Internal routing for sleek bike aesthetics Ultra-lightweight at just 0.03 lbs Shimano Ultegra Di2 Internal Routing Junction Box

**Brand:** shimano
**Price:** E£ 3955
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ride with invisible precision

## Quick Answers

- **What is this?** Shimano Ultegra Di2 Internal Routing Junction Box by shimano
- **How much does it cost?** E£ 3955 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/2424832-shimano-ultegra-di2-internal-routing-junction-box)

## Best For

- shimano enthusiasts

## Why This Product

- Trusted shimano brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Backed by Shimano’s 2-year warranty for reliable, long-term use
- • **Light as a Feather:** Adds minimal weight, preserving your bike’s speed advantage
- • **Sleek Internal Routing:** Keeps your bike’s look clean and aerodynamic with hidden wiring
- • **Effortless Electronic Sync:** Connects all Di2 components for flawless shifting performance
- • **Universal Ultegra Compatibility:** Designed specifically for Ultegra 6770, 6870 & Dura-Ace 9070 systems

## Overview

The Shimano Ultegra Di2 Internal Routing Junction Box (SM-JC41) is a compact, ultra-lightweight hub that seamlessly connects all electronic shifting wires for Shimano’s Ultegra and Dura-Ace Di2 groupsets. Designed for internal routing, it ensures a clean, aerodynamic bike profile while delivering flawless, reliable electronic shifting backed by a 2-year warranty.

## Description

Shimano Ultegra Di2 Internal Routing Junction Box

## Features

- Crankset Compatibility: 2 x 10
- Compatible Components: Shimano Ultegra Di2
- Recommended Use: ditching your mechanical tethers
- Manufacturer Warranty: 2 years
- Actual Weight Notes: Weight is for Di2 Junction B.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 4.4 x 2.2 x 1.3 inches |
| Package Weight | 0.03 Pounds |
| Item Dimensions  LxWxH | 3 x 4 x 2 inches |
| Brand Name | Shimano |
| Color | One Color |
| Number of Items | 1 |
| Manufacturer | Shimano |
| Part Number | SH4255 |
| Model Year | 2012 |
| Size | Internal/SM-JC41 |
| Sport Type | Cycling |

## Images

![Shimano Ultegra Di2 Internal Routing Junction Box - Image 1](https://m.media-amazon.com/images/I/51UT4AB5t5L.jpg)
![Shimano Ultegra Di2 Internal Routing Junction Box - Image 2](https://m.media-amazon.com/images/I/4116goo9QVL.jpg)
![Shimano Ultegra Di2 Internal Routing Junction Box - Image 3](https://m.media-amazon.com/images/I/41Hn1oLZQeL.jpg)
![Shimano Ultegra Di2 Internal Routing Junction Box - Image 4](https://m.media-amazon.com/images/I/51A70FLdWxL.jpg)

## Frequently Bought Together

- Shimano Ultegra Di2 Internal Routing Junction Box
- Shimano Ultegra Di2 EW-SD50 Electric Wire
- SHIMANO EW-RS910 E-Tube Di2 Frame or bar Plug Mount Junction A, Charging Point, 2 Port

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**Shop now:** [https://www.desertcart.com.eg/products/2424832-shimano-ultegra-di2-internal-routing-junction-box](https://www.desertcart.com.eg/products/2424832-shimano-ultegra-di2-internal-routing-junction-box)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-01-22*