---
product_id: 19884513
title: "CS4160 Nexus Sprocket (20T)"
brand: "shimano"
price: "R470"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Shimano"
url: https://www.desertcart.co.za/products/19884513-cs4160-nexus-sprocket-20t
store_origin: ZA
region: South Africa
---

# Compatible with 1/8" & 3/32" chains Fits 3-tab coaster brake & internal hubs 20-tooth precision sprocket CS4160 Nexus Sprocket (20T)

**Brand:** shimano
**Price:** R470
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride, conquer every hill with Shimano precision!

## Quick Answers

- **What is this?** CS4160 Nexus Sprocket (20T) by shimano
- **How much does it cost?** R470 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/19884513-cs4160-nexus-sprocket-20t)

## 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

- • **Dual Chain Support:** Engineered to fit both 1/8" and 3/32" chains, ensuring effortless upgrades or replacements without hassle.
- • **Optimized Gear Ratio:** 20-tooth sprocket delivers smoother pedaling and easier hill climbs—feel the difference on every ride.
- • **Silent & Smooth Ride:** Designed for a straight chain line and quiet operation, making your daily commute or weekend ride pure bliss.
- • **Seamless Compatibility:** Works flawlessly with Shimano Nexus & Alfine hubs plus any 3-tab coaster brake for ultimate versatility.
- • **Durable & Low Maintenance:** Precision-machined with a protective oil coating for long-lasting performance and easy cleaning.

## Overview

The Shimano CS4160 Nexus 20T sprocket is a versatile, durable drivetrain component compatible with 1/8" and 3/32" chains and 3-tab coaster brake or internal gear hubs. Designed for smooth, quiet operation and optimized pedaling efficiency, it’s ideal for urban riders seeking reliable performance and easier hill climbs.

## 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: Very good, works perfectly. - It fits perfectly on an old single speed coaster brake hub. It makes my beach cruiser noticeably easier to pedal into the wind and up hills compared to the old and worn 19 tooth sprocket it replaced. It delivers a nice, straight chain line with the concave side facing toward the hub. No problems with the part after 11 days and 261 miles of cycling. It's wonderful for local rides in town. Start and stop riding is easier. Merging up onto the highway is easier. Heavy cargo is carried smoothly. Climbs that used to be slightly strenuous are a breeze now. I think it's better for the bike not to stress the cranks and chain the way higher gears tended to do. It's easier to keep clean than the old sprocket. It's physically larger, so there's more clearance between the teeth and spokes for a gear brush and towel to remove road grime. After a few test rides and bearing cone adjustments, the bike rode silently with the new sprocket. Shimano did a great job manufacturing this product. It was shipped with a thin coating of oil, which I presume protected it in storage. I will definitely buy this brand again when the time comes. This sprocket starts to spin out the 44:20 drivetrain at around 18 mph, but I've gotten the bike up to 22.2 mph on a downhill run. My average speed is 10.5 mph, so I might try an even lower gear some day. It feels good to ride at 13 to 14 mph in tailwinds with minimal effort, so this 20 tooth sprocket is close to ideal.
Review: Shimano rear gear cog - Poor quality, material not hardened. Teeth wear out quickly.

## 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 | B001GSKUO6 |
| Best Sellers Rank | #475,051 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #381 in Bike Cassettes & Freewheels |
| Brand Name | SHIMANO |
| Customer Reviews | 4.1 4.1 out of 5 stars (33) |
| Date First Available | September 27, 2008 |
| Global Trade Identification Number | 00689228172364 |
| Included Components | Internally Geared Hub Part |
| Item Dimensions LxWxH | 3.5 x 3.25 x 0.5 inches |
| Item Package Dimensions L x W x H | 6.4 x 3.9 x 0.4 inches |
| Manufacturer | Shimano |
| Model Name | Nexus & Alfine Cogs |
| Number of Items | 1 |
| Package Weight | 0.1 Pounds |
| Part Number | Y32203620 |
| Size | 20T |
| Sport Type | Sport |
| Style | Internally Geared Hub Part |
| Suggested Users | mens |
| UPC | 689228172364 |
| Warranty Description | Limited Warranty |

## Product Details

- **Brand:** SHIMANO
- **Color:** silver
- **Material:** Aluminum
- **Mounting Type:** Braze-On Mount
- **Product Dimensions:** 7"L x 5"W x 2"H

## Images

![CS4160 Nexus Sprocket (20T) - Image 1](https://m.media-amazon.com/images/I/51d4Lq+9AgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very good, works perfectly.
*by L***E on June 28, 2011*

It fits perfectly on an old single speed coaster brake hub. It makes my beach cruiser noticeably easier to pedal into the wind and up hills compared to the old and worn 19 tooth sprocket it replaced. It delivers a nice, straight chain line with the concave side facing toward the hub. No problems with the part after 11 days and 261 miles of cycling. It's wonderful for local rides in town. Start and stop riding is easier. Merging up onto the highway is easier. Heavy cargo is carried smoothly. Climbs that used to be slightly strenuous are a breeze now. I think it's better for the bike not to stress the cranks and chain the way higher gears tended to do. It's easier to keep clean than the old sprocket. It's physically larger, so there's more clearance between the teeth and spokes for a gear brush and towel to remove road grime. After a few test rides and bearing cone adjustments, the bike rode silently with the new sprocket. Shimano did a great job manufacturing this product. It was shipped with a thin coating of oil, which I presume protected it in storage. I will definitely buy this brand again when the time comes. This sprocket starts to spin out the 44:20 drivetrain at around 18 mph, but I've gotten the bike up to 22.2 mph on a downhill run. My average speed is 10.5 mph, so I might try an even lower gear some day. It feels good to ride at 13 to 14 mph in tailwinds with minimal effort, so this 20 tooth sprocket is close to ideal.

### ⭐⭐⭐ Shimano rear gear cog
*by M***Y on January 5, 2025*

Poor quality, material not hardened. Teeth wear out quickly.

### ⭐⭐⭐⭐⭐ Nice gear for the money
*by J***. on January 15, 2024*

Build quality is good exactly what I need for my clunker bike

## Frequently Bought Together

- Shimano CS4160 Nexus Sprocket (20T)
- Shimano SG-8S31 Alfine/Nexus small parts kit

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-14*