---
product_id: 4651957
title: "Chamberlain 7708CB-P Chain Drive Rail Extension Kit for 8 Foot High Garage Doors"
brand: "chamberlain"
price: "€ 68.76"
currency: EUR
in_stock: true
reviews_count: 8
category: "Chamberlain"
url: https://www.desertcart.ie/products/4651957-chamberlain-7708cb-p-chain-drive-rail-extension-kit-for-8
store_origin: IE
region: Ireland
---

# 38.5-inch rail extension Quick-install setup Alloy steel chain & hardware Chamberlain 7708CB-P Chain Drive Rail Extension Kit for 8 Foot High Garage Doors

**Brand:** chamberlain
**Price:** € 68.76
**Availability:** ✅ In Stock

## Summary

> 🚪 Extend your garage’s potential with Chamberlain’s precision power!

## Quick Answers

- **What is this?** Chamberlain 7708CB-P Chain Drive Rail Extension Kit for 8 Foot High Garage Doors by chamberlain
- **How much does it cost?** € 68.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/4651957-chamberlain-7708cb-p-chain-drive-rail-extension-kit-for-8)

## Best For

- chamberlain enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Quick-Install:** Includes everything you need for a fast, hassle-free extension setup.
- • **Complete Kit with Warranty:** One-year warranty plus all hardware and instructions included for peace of mind.
- • **Trusted Chamberlain Quality:** From North America’s leading garage door opener brand, tested for superior performance.
- • **Seamless 8-Foot Compatibility:** Specifically engineered for 8-foot high garage doors to ensure flawless operation.
- • **Durable Alloy Steel Construction:** Built with premium alloy steel for long-lasting strength and reliability.

## Overview

The Chamberlain 7708CB-P Chain Drive Rail Extension Kit is a precision-engineered solution designed to extend Chamberlain chain drive garage door openers for 8-foot high doors. Featuring a durable 38.5-inch alloy steel rail and replacement chain, this kit includes all necessary hardware and a one-year warranty, ensuring quick installation and reliable, everyday performance from North America’s top garage door opener manufacturer.

## Description

Product Description The Chain Drive Rail Extension Kit for 8'-High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 8-ft. garage door applications. Featuring a quick-install extension rail and replacement chain, the kit includes everything needed for quick and easy installation.Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup. From the Manufacturer Chamberlain 7708CB 8-Foot Chain Drive Extension Kit

Review: Works great but a shame to trash chain that was purchased in the box - Easy addon if your garage is an 8 FOOT GARAGE. Parts inside this box fit perfect to the parts in the garage door box. It is a SHAME that I had to throw away the chain that came with the garage door opener. Seems like a waste. Not a friendly green option. CHAMBERLAIN should have a free return option and maybe even a small credit. No where is it obvious that you need this kit if you garage is an 8 foot garage door. Stumbled onto it when reading the comments from previous desertcartians who purchased the garage door itself.
Review: Awesome - Thank you

## Features

- Fully compatible: the Chain Drive Rail Extension Kit for 8'-High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 8-ft. garage door applications..Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
- Easy Setup: featuring a quick-install extension rail and replacement chain, the kit includes all necessary hardware and instructions for a quick and easy installation.
- Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup.
- Proven quality: rigorous quality testing ensures lasting performance.
- About Chamberlain: the largest and most dependable garage door opener manufacturer in North America.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | CHAMBERLAIN |
| Item dimensions L x W x H | 38.5 x 3 x 2 inches |
| Lock Type | Digital Lock or Electromechanical Lock |
| Material | Alloy Steel |
| Recommended Uses For Product | Extending the rail of Chamberlain chain drive garage door openers in 8-ft. high garage doors |
| Special Feature | Keyless |

## Product Details

- **Brand:** CHAMBERLAIN
- **Item dimensions L x W x H:** 38.5 x 3 x 2 inches
- **Lock Type:** Digital Lock or Electromechanical Lock
- **Material:** Alloy Steel
- **Special Feature:** Keyless

## Images

![Chamberlain 7708CB-P Chain Drive Rail Extension Kit for 8 Foot High Garage Doors - Image 1](https://m.media-amazon.com/images/I/61091mgV-7L.jpg)

## Questions & Answers

**Q: Can I use my old chain drive rail extensions from genie brand?**
A: Thank you for your inquiry. Unfortunately, the old rail extensions, from your Genie opener, will not work with our Chamberlain brand garage door openers. If you need further assistance, please visit us at support.chamberlaingroup.com

**Q: Does this fit the chamberlin c2102 garage door opener?**
A: Thank you for your inquiry. The 7708CB-P, chain drive rail extension kit, will work on a C2102, for an 8-ft. garage door application.

**Q: Will this work on craftsman 9.53930DM**
A: Yes, this will work as an extension for your Craftsman Chain Drive.

**Q: Is this 7708cb-p equvilent to the craftsman 53728 ?**
A: No, the 7708CB-P is a chain drive extension kit, and the 53728 is for a belt drive extension kit. Thank you!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great but a shame to trash chain that was purchased in the box
*by G***M on April 5, 2025*

Easy addon if your garage is an 8 FOOT GARAGE. Parts inside this box fit perfect to the parts in the garage door box. It is a SHAME that I had to throw away the chain that came with the garage door opener. Seems like a waste. Not a friendly green option. CHAMBERLAIN should have a free return option and maybe even a small credit. No where is it obvious that you need this kit if you garage is an 8 foot garage door. Stumbled onto it when reading the comments from previous Amazonians who purchased the garage door itself.

### ⭐⭐⭐⭐⭐ Awesome
*by A***R on October 28, 2025*

Thank you

### ⭐⭐⭐⭐ Worked great!
*by P***P on November 2, 2024*

I have to wonder why the company does not sell a 7 ft. model and an 8 ft. model. Lots of extra parts were purchased just to get the extension. Anyone need a brand new in the box chain for a seven-foot door? Just a waste of resources.

## Frequently Bought Together

- Chamberlain 7708CB-P Chain Drive Rail Extension Kit for 8 Foot High Garage Doors
- Chamberlain C2405 MYQ Smart Garage Door Opener, Chain Drive, 1/2-HP Motor, Dual Light - Quantity 1
- Decko 24999 Universal Garage Door Opener Hanging/Installation Kit Gray

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-04*