---
product_id: 42050203
title: "Chain Guide, 30-40T, CYSKY MTB Chain Guide Direct Mount Chainring Guard Perfect for Most Bicycle Road Bike Mountain Bike BMX Fixie (Alloy Aluminum, BB Mount) (BB Mount, Black)"
brand: "cysky"
price: "€ 30.41"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/42050203-chain-guide-30-40t-cysky-mtb-chain-guide-direct-mount
store_origin: NL
region: Netherlands
---

# 4mm Hex tool Easy install Durable alloy Chain Guide, 30-40T, CYSKY MTB Chain Guide Direct Mount Chainring Guard Perfect for Most Bicycle Road Bike Mountain Bike BMX Fixie (Alloy Aluminum, BB Mount) (BB Mount, Black)

**Brand:** cysky
**Price:** € 30.41
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Never drop a chain again—ride with confidence!

## Quick Answers

- **What is this?** Chain Guide, 30-40T, CYSKY MTB Chain Guide Direct Mount Chainring Guard Perfect for Most Bicycle Road Bike Mountain Bike BMX Fixie (Alloy Aluminum, BB Mount) (BB Mount, Black) by cysky
- **How much does it cost?** € 30.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/42050203-chain-guide-30-40t-cysky-mtb-chain-guide-direct-mount)

## Best For

- cysky enthusiasts

## Why This Product

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

## Key Features

- • **Adjustable Design:** Customize the top part distance with spacers for a perfect fit.
- • **Chain Drop Prevention:** Say goodbye to dropped chains and extend the life of your chainring.
- • **High-Strength Material:** Crafted from durable aluminum, ensuring wear resistance and deformation protection.
- • **Effortless Installation:** Install and adjust in minutes with just a 4mm Hex tool—no crank removal needed!
- • **Versatile Compatibility:** Designed for narrow-wide chainrings (30-40T round, 30-38T oval) to fit most bikes.

## Overview

The CYSKY MTB Chain Guide is a high-performance chainring guard designed for easy installation and maximum durability. Compatible with a variety of chainring sizes, this adjustable guide ensures that you can ride without the worry of dropped chains, enhancing your biking experience.

## Description

Chain Guide, 30-40T, CYSKY MTB Chain Guide Direct Mount Chainring Guard Perfect for Most Bicycle Road Bike Mountain Bike BMX Fixie (Alloy Aluminum, BB Mount) (BB Mount, Black)

## Features

- Extremely easy to install and adjust using a single 4mm Hex tool, without removing your cranks.
- Suit for narrow-wide 30~40T chainring(round chainring), 30~38T chainring(oval chainring), Adjustable design
- Never drop a chain ever again and double your narrow wide chain ring life.ISCG08 hole distance: 55.9mm
- Support specification: BB Mount. High-strength material, wear and resistance to deformation
- Note: The Spacers is used to adjust the distance of the top part like the picture, Not used with bolts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | CYSKY |
| Part Number | CYSKY |
| Item Weight | 1.58 ounces |
| Package Dimensions | 6 x 4 x 0.9 inches |
| Item model number | BB Mount |
| Is Discontinued By Manufacturer | No |
| Size | BB Mount |
| Color | Black |
| Material | Aluminum |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Chain Guide, 30-40T, CYSKY MTB Chain Guide Direct Mount Chainring Guard Perfect for Most Bicycle Road Bike Mountain Bike BMX Fixie (Alloy Aluminum, BB Mount) (BB Mount, Black) - Image 1](https://m.media-amazon.com/images/I/61dDaVVY3pL.jpg)

## Available Options

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

## Questions & Answers

**Q: Whats the diameter? Does it fit a 42mm bb30 bracket?**
A: The one I bought certainly wouldn’t fit that big of a diameter bottom bracket. It’s made for the standard type, BSA threaded BB, that is most commonly used on most bikes. If you have a BB30 just get a narrow/wide chainring and you won’t need this part.

**Q: will this work on 1 x 10 ?**
A: Maybe, if you have a BSA type bottom bracket but most people would just go with a narrow/wide chainring.

**Q: How thick is the main plate ?**
A: About...?   Please specify exact thickness.  It makes a difference in the chain line which is critical.  If you have a 73mm BB this will negatively affect the chain line as there is a max of 2.5mm spacer for a Shimano external cup BB-MT-8000.  If you have a 68mm BB you may just get away with it but "about 4mm" is not a good enough answer.  Please give an exact measurement.  Thank you.

**Q: What is the difference between the bb mount and iscg05?**
A: The BB Mount chain guide don't need bolts to install, you just need to take off the crankset and install the chain guide to the Bottom Bracket. ISCG05 need bolts to install.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect
  

*by C***E on Reviewed in the United States on October 4, 2023*

Did the job

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Does the job, but not perfect, but great.
  

*by J***R on Reviewed in the United States on January 15, 2021*

Bought this to add a chain guide to my mountain bike.  Great price, nice anodized metal.You do need to remove your bottom bracket to install, and see what, if any spacers you are using.My setup is a DUB BSA bottom bracket, zero spacers between the bottom bracket.  1 x 4.5MM spacer on the outside of the bearing, since I use need boost spacing.Had to remove the 4.5MM spacer, replace with a 2MM spacer.  The bracket is 3MM.  Even then, the chain guide, with both spacers wouldn’t clear the chain ring with the chain on.  I had to add 1 spacer PLUS a presta valve nut, to achieve the perfect spacing.The chain guide needs to be maxed out on height to clear a 36T AbsoluteBlack oval chainring.I recommend some blue locktite on both screws.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Exactly what I wanted! Ridden in several races and ...
  

*by C***K on Reviewed in the United States on October 31, 2017*

Exactly what I wanted!  Ridden in several races and a long rides works perfectly!

---

## 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.nl/products/42050203-chain-guide-30-40t-cysky-mtb-chain-guide-direct-mount](https://www.desertcart.nl/products/42050203-chain-guide-30-40t-cysky-mtb-chain-guide-direct-mount)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-17*