---
product_id: 435665313
title: "Shimano Ew-Sd300 E-Tube Di2 Wire"
brand: "shimano"
price: "NT$2840"
currency: TWD
in_stock: true
reviews_count: 3
url: https://www.desertcart.tw/products/435665313-shimano-ew-sd300-e-tube-di2-wire
store_origin: TW
region: Taiwan
---

# Ultra-fast electronic shifting Seamless Di2 connectivity 2-year Shimano warranty Shimano Ew-Sd300 E-Tube Di2 Wire

**Brand:** shimano
**Price:** NT$2840
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift into the future with Shimano’s sleek eTube wire!

## Quick Answers

- **What is this?** Shimano Ew-Sd300 E-Tube Di2 Wire by shimano
- **How much does it cost?** NT$2840 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/435665313-shimano-ew-sd300-e-tube-di2-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

- • **Plug & Play:** Easy external routing with multiple length options for a perfect fit
- • **Durable Build:** Crafted from premium synthetic materials for long-lasting performance
- • **Peace of Mind:** Backed by Shimano’s trusted 2-year manufacturer warranty
- • **Sleek & Compact:** Streamlined design reduces bulk, keeping your setup lightweight and aerodynamic
- • **Precision Compatibility:** Engineered for Shimano Ultegra R8100 & Dura-Ace R9200 road drivetrains plus EP800 e-bike units

## Overview

The Shimano EW-SD300 E-Tube Di2 Wire is a lightweight, compact external wiring solution designed for high-performance Shimano road and e-bike drivetrains. Compatible with Ultegra R8100, Dura-Ace R9200, and EP800 series, it ensures ultra-responsive electronic shifting with durable synthetic construction and a reassuring 2-year warranty.

## Description

Shimano EW-SD300 Di2 eTube Wire for external routing is available in a variety of lengths.Compact design makes new electric components smaller and lighterEP8 EP800 Series

## Features

- Compatibility: [road bike drivetrains] Shimano Ultegra R8100 and Dura-Ace R9200, [e-bike] Shimano EP800 drive units
- Activity: road cycling, e-bike
- Manufacturer Warranty: 2 years

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black |
| Size | 1200mm |
| Height | 1 inches |
| Length | 7 inches |
| Weight | 0.1 Pounds |
| Width | 4 inches |
| Material Type | Synthetic material/Plastic |
| Batteries Included? | No |
| Brand | SHIMANO |
| Manufacturer | Shimano |
| Item model number | Shimano |
| Product Dimensions | 17.78 x 10.16 x 2.54 cm; 9 g |
| ASIN | B08X1BDJ8T |

## Product Details

- **Brand:** SHIMANO
- **Material:** Synthetic material/Plastic
- **Colour:** Black
- **Nominal wall thickness:** 1.2 millimeters
- **Item length:** 9.5E+2 Millimeters

## Images

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

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: 12 speed?**
A: I'll google it for you......yes the sd300 is the newer thinner cable used with the 12s di2 groups.

**Q: i'm looking this cable to update the DI2 shifters firmware, after the firmware is upgraded the cable is not needed anymore ?**
A: The ew-300 cable is only used on the newer 12 speed systems.  Those systems have a Bluetooth system built into the rear derailleur that uses the Shimano app to upgrade the firmware.  You use the Shimano e-tube app on your cell phone.  The older systems use a special interface adapter that you have to purchase to do that.  Short answer is that you never need that cable to do a firmware upgrade.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    I got this for shifter firmware update
  

*by P***N on Reviewed in the United States on 9 January 2023*

As you may have known, you are unable to update shifters firmware wirelessly.  However, you can connect the shifter to the battery for firmware update.  This extra cable will be used for updating firmwares.

### ⭐⭐⭐⭐ 







  
  
    Does the job but absurdly expensive
  

*by S***. on Reviewed in the United States on 10 October 2022*

The cable does the job, and won't need to be replaced often. My primary complaint is how much it costs, but with a proprietary connector you don't have any choice but to buy from Shimano.

### ⭐⭐⭐⭐⭐ 







  
  
    Did the job,
  

*by W***R on Reviewed in the United States on 26 December 2022*

Worked as advertised

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**Shop now:** [https://www.desertcart.tw/products/435665313-shimano-ew-sd300-e-tube-di2-wire](https://www.desertcart.tw/products/435665313-shimano-ew-sd300-e-tube-di2-wire)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-24*