---
product_id: 8757063
title: "SG-3C40 Nexus Sprocket (18T)"
price: "3586 kr"
currency: ISK
in_stock: true
reviews_count: 8
url: https://www.desertcart.is/products/8757063-sg-3c40-nexus-sprocket-18t
store_origin: IS
region: Iceland
---

# compatible with 1/8" & 3/32" chains 18 teeth precision sprocket fits 3-tab coaster brakes & internal hubs SG-3C40 Nexus Sprocket (18T)

**Price:** 3586 kr
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride with the quiet power of precision engineering!

## Quick Answers

- **What is this?** SG-3C40 Nexus Sprocket (18T)
- **How much does it cost?** 3586 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/8757063-sg-3c40-nexus-sprocket-18t)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Shimano Quality:** Backed by Shimano’s legacy for durability and performance, ensuring long-lasting reliability.
- • **Lightweight & Compact Design:** At just 0.01 ounces and 2.75 inches, it’s the perfect upgrade without adding bulk.
- • **Seamless Chain Compatibility:** Works flawlessly with both 1/8" and 3/32" chains for ultimate versatility.
- • **Precision Engineered 18T Teeth:** Optimized tooth design ensures smooth, quiet, and efficient power transfer every ride.
- • **Universal Fit for Internal Hubs:** Designed to fit any 3-tabbed coaster brake or internally geared hub, making upgrades effortless.

## Overview

The Shimano SG-3C40 Nexus Sprocket (18T) is a high-quality, precision-engineered bicycle sprocket compatible with both 1/8" and 3/32" chains. It fits any 3-tabbed coaster brake or internally geared hub, delivering smooth, quiet, and efficient performance. Lightweight and durable, this sprocket is a trusted replacement part that enhances drivetrain reliability for serious cyclists.

## Description

Shimano Alfine and nexus cogs work with either a 1/8 or 3/32 chain. Will also fit any 3 tabbed coaster brake or internally gear hub.

Review: quality sprocket - I bought a cruiser bike with a KT coaster brake and KT sprocket. The sprocket was warped and the shape of the teeth was primitive. It was not meshing properly with the chain and making lots of loud ugly noises. The Shimano sprocket was a perfect replacement and everything is working quietly and smoothly.
Review: Four Stars - good

## Features

- Will also fit any 3 tabbed coaster brake or internally gear hub
- Will work with either 1/8" or 3/32" chains
- Shimano Reference Number: SG-3R40

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001GSSO1W |
| Best Sellers Rank | #400,163 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #377 in Bike Cassettes & Freewheels |
| Brand Name | SHIMANO |
| Color | silver |
| Customer Reviews | 4.6 4.6 out of 5 stars (29) |
| Date First Available | September 27, 2008 |
| Included Components | Internally Geared Hub Part |
| Item Dimensions LxWxH | 2.75 x 2.75 x 0.25 inches |
| Item Package Dimensions L x W x H | 3 x 3 x 0.1 inches |
| Item Weight | 0.01 Ounces |
| Manufacturer | Shimano |
| Model Name | Nexus & Alfine Cogs |
| Number of Items | 1 |
| Package Weight | 0.05 Pounds |
| Part Number | Y32203420 |
| Size | 18T |
| Style | Internally Geared Hub Part |
| Suggested Users | Unisex-Adult |
| Warranty Description | Limited Warranty |

## Images

![SG-3C40 Nexus Sprocket (18T) - Image 1](https://m.media-amazon.com/images/I/917HPmRy6zL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ quality sprocket
*by E***L on July 1, 2023*

I bought a cruiser bike with a KT coaster brake and KT sprocket. The sprocket was warped and the shape of the teeth was primitive. It was not meshing properly with the chain and making lots of loud ugly noises. The Shimano sprocket was a perfect replacement and everything is working quietly and smoothly.

### ⭐⭐⭐⭐ Four Stars
*by L***G on January 21, 2015*

good

### ⭐⭐⭐⭐⭐ Great
*by S***Y on June 25, 2014*

This was one of my early purchases and got me off to a good start delivery on time part perfect cannot fault it everything good, can recommend product and company.

## Frequently Bought Together

- Shimano SG-3C40 Nexus Sprocket (18T)
- Shimano SG-8S31 Alfine/Nexus small parts kit
- SHIMANO Nexus 16 Tooth cog, Black

---

## 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.is/products/8757063-sg-3c40-nexus-sprocket-18t](https://www.desertcart.is/products/8757063-sg-3c40-nexus-sprocket-18t)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-06-27*