---
product_id: 325906801
title: "Shimano Ew-Sd300 E-Tube Di2 Wire Black, 300Mm"
brand: "shimano"
price: "€ 57.93"
currency: EUR
in_stock: true
reviews_count: 8
category: "Shimano"
url: https://www.desertcart.nl/products/325906801-shimano-ew-sd300-e-tube-di2-wire-black-300mm
store_origin: NL
region: Netherlands
---

# 12-speed Di2 compatibility 300mm length for versatile routing Compact design for sleek integration Shimano Ew-Sd300 E-Tube Di2 Wire Black, 300Mm

**Brand:** shimano
**Price:** € 57.93
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride, wire your future.

## Quick Answers

- **What is this?** Shimano Ew-Sd300 E-Tube Di2 Wire Black, 300Mm by shimano
- **How much does it cost?** € 57.93 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/325906801-shimano-ew-sd300-e-tube-di2-wire-black-300mm)

## 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

- • **Firmware Update Essential:** A must-have tool to easily update your wireless Di2 shifters without the hassle of frame disassembly—stay ahead with the latest tech.
- • **Durable & Lightweight Build:** Crafted with precision plastic and minimal weight (0.05 lbs), it blends durability with performance for the discerning cyclist.
- • **Future-Ready Compact Design:** Smaller, lighter electric components mean your bike stays sleek and ready for upcoming DI2 system enhancements.
- • **Seamless 12-Speed Integration:** Effortlessly compatible with Shimano 105, Ultegra, and Dura-Ace Di2 systems for next-level shifting precision.
- • **Optimized Length for Internal Routing:** At 300mm, perfectly sized to fit electric components from 150mm to 650mm diameter, ensuring clean, hidden cable management.

## Overview

The Shimano EW-SD300 E-Tube Di2 Wire is a 300mm compact, lightweight cable designed for seamless compatibility with Shimano’s 12-speed Di2 groupsets including 105, Ultegra, and Dura-Ace. Engineered for internal routing, it enables effortless firmware updates and future system enhancements, making it an essential upgrade for tech-savvy cyclists seeking precision and sleek integration.

## Description

The Shimano EW-SD300 Di2 12 Speed eTube Wire is compatible with Shimano 12 speed Di2 systems like Shimano 105 R7150/R7170, Shimano Ultegra R8150/R8170, and Shimano Dura-Ace R9150/R9170. Measuring 300 mm, it's suitable for electric components ranging from 150 mm to 650 mm in diameter. This wire is designed to be more compact, reducing the size and weight of new electric components, and may potentially enhance the future capabilities of DI2 systems.

Review: Di2 wire for new build or to help update firmware on wireless shifters - If you have new wireless DI2 drivetrain that is well hidden in the frame it can be difficult or just plain time consuming to pull out a powered wire long enough to reach the shifters to perform a firmware update that requires a wired connection. Combine this wire with a coupler and you can attach it to your front derailleur wire. Get two wires if you want to update firmware on both shifters at the same time. The wire worked great for the shifter update and is now safely stored in a place where I know where it is for the next update when I will inevitably dig around for it in every corner of the house, don’t find it and then order another wire and coupler, but then find the old wire when I am looking for a safe place to store the new wire and go to the same obvious wire storing place I overlooked when looking for the old wire. Then I’ll have three sets of wires which seems like a waste, but maybe a friend will need one and then I can just donate it to them and seem all altruistic when in fact I’m just getting rid of an extra wire and don’t really care if I’m helping my friend out as long as my wife stops berating me for buying another “useless” thing for my bike. Clearly she doesn’t know the need to update firmware or the pleasure of seeing oil slick titanium bolts shining like bright personal nebulae on a black bike frame. I should just start smoking cigarettes instead of cycling so much. At least my wife would be happy I’m spending time at home instead of biking all over the place enjoying nature, improving my mental status and enjoying fresh clean air. It will be a shorter life with complications of emphysema, smelling like smoke, which I abhor, but at least my wife can stay by my bedside in the hospital as I slowly expire, gasping for air as I use to do when pounding out the watts on a steep mountain pass under a blue sky. I might cry a few final tears at that image. It will be in that moment that my loving wife will tell me she wished I had taken better care of myself so we had more time together. And also, she’ll tell me she found that old Di2 wire I was looking for all those years ago. She’ll place it on my chest and I will reach for it in a vain effort as if holding it will help me recapture my health.
Review: You need it - You need it to upgrade everything so it’s perfect

## Features

- Compatibility: Shimano 105 R7150/R7170
- Compatibility: Shimano Ultegra R8150/R8170
- Compatibility: Shimano Dura-Ace R9150/R9170
- Reduced Size: New electric components are more compact
- Future Potential: May enhance DI2 system capabilities
- Usage: Ideal for internal routing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | SHIMANO |
| Color | Silver |
| Item Length | 7 Inches |
| Item Weight | 0.05 Pounds |
| Material | Plastic |
| Nominal Wall Thickness | 0.75 centimeters |

## Product Details

- **Brand:** SHIMANO
- **Color:** Silver
- **Global Trade Identification Number:** 00192790634999
- **Item Length:** 7 Inches
- **Item Weight:** 22.68 g
- **Manufacturer:** Shimano
- **Material:** Plastic
- **Nominal Wall Thickness:** 0.75 centimeters
- **Specific Uses For Product:** Cycling activities, Bicycle maintenance (internal cable routing)
- **UPC:** 192790634999

## Images

![Shimano Ew-Sd300 E-Tube Di2 Wire Black, 300Mm - Image 1](https://m.media-amazon.com/images/I/41zWQY4loEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Di2 wire for new build or to help update firmware on wireless shifters
*by D***S on December 31, 2024*

If you have new wireless DI2 drivetrain that is well hidden in the frame it can be difficult or just plain time consuming to pull out a powered wire long enough to reach the shifters to perform a firmware update that requires a wired connection. Combine this wire with a coupler and you can attach it to your front derailleur wire. Get two wires if you want to update firmware on both shifters at the same time. The wire worked great for the shifter update and is now safely stored in a place where I know where it is for the next update when I will inevitably dig around for it in every corner of the house, don’t find it and then order another wire and coupler, but then find the old wire when I am looking for a safe place to store the new wire and go to the same obvious wire storing place I overlooked when looking for the old wire. Then I’ll have three sets of wires which seems like a waste, but maybe a friend will need one and then I can just donate it to them and seem all altruistic when in fact I’m just getting rid of an extra wire and don’t really care if I’m helping my friend out as long as my wife stops berating me for buying another “useless” thing for my bike. Clearly she doesn’t know the need to update firmware or the pleasure of seeing oil slick titanium bolts shining like bright personal nebulae on a black bike frame. I should just start smoking cigarettes instead of cycling so much. At least my wife would be happy I’m spending time at home instead of biking all over the place enjoying nature, improving my mental status and enjoying fresh clean air. It will be a shorter life with complications of emphysema, smelling like smoke, which I abhor, but at least my wife can stay by my bedside in the hospital as I slowly expire, gasping for air as I use to do when pounding out the watts on a steep mountain pass under a blue sky. I might cry a few final tears at that image. It will be in that moment that my loving wife will tell me she wished I had taken better care of myself so we had more time together. And also, she’ll tell me she found that old Di2 wire I was looking for all those years ago. She’ll place it on my chest and I will reach for it in a vain effort as if holding it will help me recapture my health.

### ⭐⭐⭐⭐⭐ You need it
*by R***N on December 30, 2025*

You need it to upgrade everything so it’s perfect

### ⭐⭐⭐⭐⭐ Works as intended
*by M***Z on August 13, 2025*

Does what it's supposed to do and it's authentic Shimano

## Frequently Bought Together

- SHIMANO 2Nd Gen E-Tube Di2 Wire
- SHIMANO 2 PORT JUNCTION EW JC302 SD300 PORT X 2
- SHIMANO Cycling Y7HE40000 TL-EW300 Cable Tool - Replacement Spare Parts for Bike

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-26*