---
product_id: 288286866
title: "EW-SD300 Di2 12 Speed eTube Wire"
brand: "shimano"
price: "B/.109"
currency: PAB
in_stock: true
reviews_count: 9
category: "Shimano"
url: https://www.desertcart.com.pa/products/288286866-ew-sd300-di2-12-speed-etube-wire
store_origin: PA
region: Panama
---

# 12-speed Di2 compatibility Internal routing ready Reduced size & lightweight EW-SD300 Di2 12 Speed eTube Wire

**Brand:** shimano
**Price:** B/.109
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride, stay wired, and never miss a shift!

## Quick Answers

- **What is this?** EW-SD300 Di2 12 Speed eTube Wire by shimano
- **How much does it cost?** B/.109 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/288286866-ew-sd300-di2-12-speed-etube-wire)

## 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

- • **Featherlight Design:** Compact, reduced-size electric components that shave grams without sacrificing performance.
- • **Future-Proof Expansion:** Built to support evolving Di2 system capabilities, keeping your ride ahead of the curve.
- • **Sleek Internal Routing:** Optimized for clean, hidden cable management that elevates bike aesthetics and aerodynamics.
- • **Firmware Update Essential:** The must-have wired connection for quick, hassle-free Di2 firmware updates—never get left behind.
- • **Seamless 12-Speed Di2 Integration:** Effortlessly compatible with Shimano 105, Ultegra & Dura-Ace systems for flawless shifting.

## Overview

The Shimano EW-SD300 Di2 12 Speed eTube Wire is a lightweight, compact internal routing cable designed for seamless compatibility with Shimano's latest 12-speed Di2 groupsets (105, Ultegra, Dura-Ace). It enables efficient firmware updates and supports future system expansions, making it an essential upgrade for tech-savvy cyclists who demand precision and sleek integration.

## Description

This Shimano EW-SD300 Di2 12 Speed eTube Wire is compatible with Shimano's 12-speed Di2 systems, including 105 R7150/R7170, Ultegra R8150/R8170, and Dura-Ace R9150/R9170. Its more compact design reduces the size and weight of new electric components, potentially enhancing the future capabilities of Di2 systems, and is ideal for internal routing use.

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

- Shimano 105 Compatible: R7150/R7170
- Shimano Ultegra Compatible: R8150/R8170
- Shimano Dura-Ace Compatible: R9150/R9170
- Reduced Size: Lighter Electric Components
- Potential Future Expansion: DI2 System Capabilities
- Internal Routing Application

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08X1WM4FB |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #49,919 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #16 in Bike Cables |
| Brand | SHIMANO |
| Color | Silver |
| Customer Reviews | 4.7 4.7 out of 5 stars (127) |
| Date First Available | February 19, 2021 |
| EU Spare Part Availability Duration | 2 Years |
| Global Trade Identification Number | 00192790635057 |
| Item Length | 1600 Millimeters |
| Item Package Quantity | 1 |
| Item Weight | 1.41 ounces |
| Item model number | Shimano |
| Manufacturer | Shimano |
| Material | Plastic |
| Nominal Wall Thickness | 0.5 millimeters |
| Outside Diameter | 3.45 Millimeters |
| Part Number | 192790635057 |
| Size | 1600mm |
| Specific Uses For Product | Internal cable routing in bicycles |
| UPC | 192790635057 |
| Warranty Description | Limited Warranty |

## Product Details

- **Brand:** SHIMANO
- **Color:** Silver
- **EU Spare Part Availability Duration:** 2 Years
- **Item Length:** 1600 Millimeters
- **Manufacturer:** Shimano
- **Material:** Plastic
- **Nominal Wall Thickness:** 0.5 millimeters
- **Outside Diameter:** 3.45 Millimeters
- **Specific Uses For Product:** Internal cable routing in bicycles
- **UPC:** 192790635057

## Images

![EW-SD300 Di2 12 Speed eTube Wire - 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.pa/products/288286866-ew-sd300-di2-12-speed-etube-wire](https://www.desertcart.com.pa/products/288286866-ew-sd300-di2-12-speed-etube-wire)

---

*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-07*