---
product_id: 7115190
title: "ethirteen Extended Range Cog 40t Shimano"
brand: "e*thirteen"
price: "B/.2"
currency: PAB
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.pa/products/7115190-ethirteen-extended-range-cog-40t-shimano
store_origin: PA
region: Panama
---

# 8x8x1 in Dimensions 0.08 kg Lightweight 40t Gear Ratio ethirteen Extended Range Cog 40t Shimano

**Brand:** e*thirteen
**Price:** B/.2
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Elevate Your Ride – Conquer Every Hill!

## Quick Answers

- **What is this?** ethirteen Extended Range Cog 40t Shimano by e*thirteen
- **How much does it cost?** B/.2 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/7115190-ethirteen-extended-range-cog-40t-shimano)

## Best For

- e*thirteen enthusiasts

## Why This Product

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

## Key Features

- • **Sleek & Stylish:** Available in a sleek black finish, perfect for the modern trail bike.
- • **Durable & Resilient:** Crafted from Exa+ anodized aluminum, built to withstand heavy power without flex.
- • **Cost-Effective Upgrade:** Enhance your existing 1X 10-speed drivetrain without breaking the bank.
- • **Seamless Shifting Experience:** Experience crisp shifts with e*thirteen's advanced Speed Shift Technology.
- • **Unleash Your Climbing Potential:** Transform your ride with the 40t cog, designed for steep climbs.

## Overview

The e*thirteen Extended Range Cog 40t for Shimano is a high-performance upgrade designed to enhance your 1X 10-speed drivetrain. With its lightweight construction and advanced shifting technology, this cog allows for seamless transitions and improved climbing capabilities, all while maintaining a stylish black aesthetic.

## Description

Back before the age of derailleurs, dudes had to climb alpine passes on singlespeeds with a flippable rear wheel that had two cogs: big and bigger. Fast forward nearly a century, and e*thirteen components' Extended Range Cog bumps your one-by drivetrain's cassette range up to the granniest of granny gearings, effectively adding a chainring to the bottom end of your cogs. With a capacity of 40 or 42 teeth, the Extended Range Cog levels the grade to make sure you get to the top without crunching all the cartilage out of your knees.

## Features

- Make Your Move To 1X And Crush The Steepest Climbs On Your Trail Bike With The Ex Cog
- Add Much Needed Range To Your Existing 1X 10 Speed Drivetrain Without Breaking The Bank
- Shifts Stay Crisp Thanks To E
- Thirteen Speed Shift Technology And The Exa+ Anodized Aluminum Resists Flex Under Heavy Power

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 7.48 x 7.48 x 0.39 inches |
| Package Weight | 0.08 Kilograms |
| Item Dimensions  LxWxH | 8 x 8 x 1 inches |
| Item Weight | 0.08 Kilograms |
| Brand Name | e*thirteen |
| Color | Black |
| Manufacturer | e*thirteen |
| Part Number | FW10.ER-10SHIM.42.K_Noir_5 mm |
| Model Year | 2014 |
| Size | 42t for Shimano |

## Images

![ethirteen Extended Range Cog 40t Shimano - Image 1](https://m.media-amazon.com/images/I/81sT2MLzaBL.jpg)
![ethirteen Extended Range Cog 40t Shimano - Image 2](https://m.media-amazon.com/images/I/81pmYJN7yML.jpg)

## Available Options

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

## Customer Reviews

### ⭐ 1.0 out of 5 stars







  
  
    Weak aluminium will snap, make you crash, and hurt you while riding.
  

*by M***J on Reviewed in the United States on June 10, 2019*

Weak. Broke second ride

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good product that is SRAM conpatible
  

*by S***H on Reviewed in the United States on December 17, 2016*

No complaints about this product. With a SRAM Gx 10 sp derailer and SRAM 10 speed cassette, it shifts perfectly.  It's strong and has held up to a lot of tough climbs and other agressive mtn bike abuse. and I love the color.  I think I should've gotten a 40t for my riding style.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    What can I say... This thing is ...
  

*by I***D on Reviewed in the United States on October 6, 2014*

What can I say... This thing is bitchin!! At a fraction of the price of other similar products and also lighter than two other top brands I was considering. It takes a beating and has helped me out big time on the climbs!

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**Shop now:** [https://www.desertcart.com.pa/products/7115190-ethirteen-extended-range-cog-40t-shimano](https://www.desertcart.com.pa/products/7115190-ethirteen-extended-range-cog-40t-shimano)

---

*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-03-16*