---
product_id: 10282777
title: "Koch 7640040 Roller Chain Offset Link, 4-Pack, #40"
brand: "koch industries"
price: "$15.41"
currency: USD
in_stock: true
reviews_count: 8
category: "Koch Industries"
url: https://www.desertcart.us/products/10282777-koch-7640040-roller-chain-offset-link-4-pack-40
store_origin: US
region: United States of America
---

# 4-pack offset links for precise chain length ANSI B29.1 standard pitch 1/2 inch Alloy steel durable construction Koch 7640040 Roller Chain Offset Link, 4-Pack, #40

**Brand:** koch industries
**Price:** $15.41
**Availability:** ✅ In Stock

## Summary

> 🔗 Nail the perfect chain length—no more compromises!

## Quick Answers

- **What is this?** Koch 7640040 Roller Chain Offset Link, 4-Pack, #40 by koch industries
- **How much does it cost?** $15.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/10282777-koch-7640040-roller-chain-offset-link-4-pack-40)

## Best For

- koch industries enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Use:** Ideal for minibikes, conveyor belts, reel mowers, and more
- • **Certified Quality:** Meets rigorous ASME/ANSI B29.1 standards for reliability
- • **Durable Alloy Steel:** Engineered for long-lasting strength under industrial loads
- • **Effortless Installation:** Easy cotter pin locking system beats frustrating snap-on pins
- • **Precision Chain Adjustment:** Add half-link increments for the perfect fit every time

## Overview

The Koch 7640040 Roller Chain Offset Link 4-Pack offers precision half-link chain length adjustments with ANSI B29.1 certified 1/2 inch pitch links made from durable alloy steel. Designed for easy installation and reliable performance in machinery repair, manufacturing, and recreational projects, these offset links solve chain tension challenges with professional-grade quality.

## Description

From the Manufacturer Koch Industries single strand roller chain offset links can be used to join 2 pieces of chain by 1 pitch increment.

Review: These Are Awesome - I built a minibike and no matter what I tried, the chain was either too short or a link too long. If I removed the link on the long chain, then it was too short. I Tried adjusting the engine position, which was limited. Moving the rear axle around which was limited too, nothing seemed to give me that perfect tension. I came across these offset links. They saved me from the frustration. The chain that was cut and seemed too short, I added this offset link and bingo, perfect fit. It's like adding half a link. I have run the chain with the offset link for months now with no chain issues whatsoever. Glad to find these and happy with how they function.
Review: Can come in VERY handy! - I was making three chains for a Tru-Cut reel mower, from one length of 10ft #40 chain. I bought regular connectors pins, then saw these afterward and thought "just in case" and picked up a pack to have on hand on the off-chance I'd need them. And boy was I glad I did! Turned out TWO of the factory chains I removed from the mower were made with a half link, so I never would have gotten the right length without having these! They also use an easy little cotter pin to lock them on, instead of the snap-on pins the full-length connector pins use which are a PITA. Highly recommended.

## Features

- Standard roller chain offset links meet ASME/ANSI B29.1 standards
- Pitch: 1/2 inch
- Selling unit: 4 pieces
- Package Dimensions: 5.0" L x 2.75" W x 3.62" H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004HKITWU |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #814,954 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #709 in Power Transmission Roller Chains |
| Brand | Koch Industries |
| Color | Dark Grey |
| Customer Reviews | 4.4 4.4 out of 5 stars (166) |
| Date First Available | January 13, 2011 |
| Global Trade Identification Number | 00719961460388 |
| Included Components | 4 |
| Is Discontinued By Manufacturer | No |
| Item Length | 2 Inches |
| Item Package Quantity | 4 |
| Item Pitch | 0.5 Inches |
| Item Weight | 0.336 ounces |
| Item model number | 7640040 |
| Load Capacity | 5 Pounds |
| Manufacturer | Koch |
| Material | Alloy Steel |
| Part Number | 7640040 |
| Recommended Uses For Product | Machinery repair/maintenance, Manufacturing (conveyor systems, bicycles, industrial equipment) |
| Roller Diameter | 0.5 Inches |
| Size | #40 |
| Specification Met | ANSI B29.1 |
| Strand Type | Single |
| Style | Offset Link |
| UPC | 719961460388 |

## Product Details

- **Brand:** Koch Industries
- **Item Pitch:** 0.5 Inches
- **Load Capacity:** 5 Pounds
- **Material:** Alloy Steel
- **Recommended Uses For Product:** Machinery repair/maintenance, Manufacturing (conveyor systems, bicycles, industrial equipment)

## Images

![Koch 7640040 Roller Chain Offset Link, 4-Pack, #40 - Image 1](https://m.media-amazon.com/images/I/61C+5-Sbv1L.jpg)

## Questions & Answers

**Q: will this fit a 415 chain for 80cc motorized bike chain standard 2-stroke chain**
A: Not sure,  but they sell a half link like this on Amazon specifically for 415 chain for the 80cc bike. Just search "415 chain half link' on Amazon

**Q: Is this o ring?**
A: no it's not for an o-ring chain

**Q: Can this work for a 41 chain.**
A: #41 Chain will only fit #41 sprockets, #40 sprockets are too wide. #420 will fit on #41 sprockets, its just a little bit heavier duty with a larger pin. #40 Chain will fit on #41 sprockets, it is basically the same as #420, except it has wider Rollers, it is considerably heavier duty than #41

**Q: Is this o ring?**
A: no

## Customer Reviews

### ⭐⭐⭐⭐⭐ These Are Awesome
*by T***. on July 25, 2020*

I built a minibike and no matter what I tried, the chain was either too short or a link too long. If I removed the link on the long chain, then it was too short. I Tried adjusting the engine position, which was limited. Moving the rear axle around which was limited too, nothing seemed to give me that perfect tension. I came across these offset links. They saved me from the frustration. The chain that was cut and seemed too short, I added this offset link and bingo, perfect fit. It's like adding half a link. I have run the chain with the offset link for months now with no chain issues whatsoever. Glad to find these and happy with how they function.

### ⭐⭐⭐⭐⭐ Can come in VERY handy!
*by C***S on March 7, 2022*

I was making three chains for a Tru-Cut reel mower, from one length of 10ft #40 chain. I bought regular connectors pins, then saw these afterward and thought "just in case" and picked up a pack to have on hand on the off-chance I'd need them. And boy was I glad I did! Turned out TWO of the factory chains I removed from the mower were made with a half link, so I never would have gotten the right length without having these! They also use an easy little cotter pin to lock them on, instead of the snap-on pins the full-length connector pins use which are a PITA. Highly recommended.

### ⭐⭐⭐⭐⭐ Good #40 half link
*by S***N on May 10, 2021*

Works as designed to add half a link in #40 chain

## Frequently Bought Together

- Koch 7640040 Roller Chain Offset Link, 4-Pack, #40
- PGN #40 Roller Chain - 10 Feet + 2 Free Connecting Links - Carbon Steel Chains for Bycicles, Mini Bikes, Motorcycles, Go-Karts, Home and Industrial Machinery - 239 Links

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-17*