---
product_id: 4052526
title: "Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit"
brand: "chamberlain"
price: "€ 186.53"
currency: EUR
in_stock: true
reviews_count: 13
category: "Chamberlain"
url: https://www.desertcart.sk/products/4052526-chamberlain-group-g8808cb-p-chamberlain-8808cb-8-foot-compatible-whisper
store_origin: SK
region: Slovakia
---

# 8-foot steel rail extension Includes replacement belt & hardware Easy DIY installation Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit

**Brand:** chamberlain
**Price:** € 186.53
**Availability:** ✅ In Stock

## Summary

> 🚪 Extend your garage’s potential with effortless strength and style!

## Quick Answers

- **What is this?** Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit by chamberlain
- **How much does it cost?** € 186.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/4052526-chamberlain-group-g8808cb-p-chamberlain-8808cb-8-foot-compatible-whisper)

## 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

- • **Complete Upgrade Kit:** Includes replacement belt and all necessary hardware for a hassle-free install.
- • **DIY Friendly Installation:** Quick install rail system designed for easy, no-fuss setup by any homeowner.
- • **Seamless 8-Foot Extension:** Perfectly engineered to fit your 8-foot garage door with precision steel rail.
- • **Optimized for Whisper Drive:** Specifically compatible with Chamberlain Whisper Drive and Whisper Drive Plus models.
- • **Enhanced Structural Integrity:** New steel rail system boosts durability and stability for long-term performance.

## Overview

The Chamberlain 8808CB 8-Foot Rail Extension Kit is a premium steel upgrade designed for 8-foot garage doors compatible with Whisper Drive and Whisper Drive Plus openers. It includes a replacement belt and all necessary hardware, ensuring a smooth, DIY-friendly installation that enhances the opener’s structural integrity and performance.

## Description

Product Description For use with Chamberlain Whisper Drive and Whisper Drive Plus belt drive garage door openers featuring the quick install rail system. From the Manufacturer 8-foot belt drive extension kit.

Review: Perfect kit for changing door from 7 foot to 8 foot vertical height. - One of the easiest upgrades/ replacement / addition kit to be done for the door from 7 foot to 8 foot doors. Great quality. Great pricing. Great connectivity.
Review: Required for an 8ft door install - This worked perfect on a new install. I knew I had an 8ft door. The factory rail kit works for shorter doors. Simply replace the one end of the track with the one included in this kit. I was able to install everything by myself.

## Features

- The product is 8', new structural steel rail extension kit
- Easy and simple use kit
- The product is manufactured in China
- Works on garage doors up to 8 feet high
- Includes rail extension, replacement belt, and all necessary hardware
- New structural steel rail system
- Increases structural integrity

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000VL9TBY |
| Best Sellers Rank | #26,103 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Garage Door Opener System Parts |
| Brand Name | CHAMBERLAIN |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,779) |
| Global Trade Identification Number | 00012381180028 |
| Included Components | Hardware, Manual, Rail Extension, Replacement Belt |
| Item Type Name | Garage Door Opener 8 Ft Rail Extension Kit |
| Item Weight | 2.6 Pounds |
| Manufacturer | Chamberlain |
| Manufacturer Warranty Description | 1 Year |
| Material Type | steel |
| Required Assembly | Yes |
| Style Name | Modern |
| UPC | 012381180028 012381088089 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** CHAMBERLAIN
- **Color:** Black
- **Item Weight:** 2.6 Pounds
- **Material:** steel
- **Style:** Modern

## Images

![Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit - Image 1](https://m.media-amazon.com/images/I/51JhMr6LtyL.jpg)
![Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit - Image 2](https://m.media-amazon.com/images/I/51IxEN4PslL.jpg)
![Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit - Image 3](https://m.media-amazon.com/images/I/616ZTiqRRKL.jpg)
![Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit - Image 4](https://m.media-amazon.com/images/I/71lcO9hiS0L.jpg)
![Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit - Image 5](https://m.media-amazon.com/images/I/61IcjHs4fQL.jpg)

## Questions & Answers

**Q: does this work on the B750 model Chamberlain?**
A: Yes, this would be the appropriate rail extension kit for your Chamberlain B750 opener.

**Q: Will this fit the chamberlain whisperer model 248739 ?**
A: According to Chamberlain's web site, yes.  Search for "chamberlain "248739"", you should find a downloadable parts manual; "8808CB 8 Foot (2.4 m) Rail extension kit" is listed for Models WD822KD • WD832KD • 248739, page 37.

**Q: I have a 12 x 16 foot door. Do I need to purchase an extension kit? If so, which one?**
A: You will definitely need an extension kit.  The opener is designed for a standard 7ft. door and therefore the rail (and belt on it) is only long enough to raise a door 7ft.  I have an 8ft door and only bought the extension for the additional 1 ft.  You should probably contact Chamberlain to see if they offer an extension for a 12ft door.  It might require a different type of opener.

**Q: Do I need to purchase the extension kit for the garage door opener to work?**
A: You have to purchase extension if door is 8 foot tall or it will not work.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect kit for changing door from 7 foot to 8 foot vertical height.
*by V***6 on July 13, 2026*

One of the easiest upgrades/ replacement / addition kit to be done for the door from 7 foot to 8 foot doors. Great quality. Great pricing. Great connectivity.

### ⭐⭐⭐⭐⭐ Required for an 8ft door install
*by A***N on January 12, 2026*

This worked perfect on a new install. I knew I had an 8ft door. The factory rail kit works for shorter doors. Simply replace the one end of the track with the one included in this kit. I was able to install everything by myself.

### ⭐⭐⭐⭐⭐ perfect
*by J***L on June 27, 2026*

original equipment

## Frequently Bought Together

- Chamberlain Group G8808CB-P Chamberlain 8808CB 8-Foot, Compatible Whisper Drive Plus Models, Includes Replacement Belt Garage Door Opener 8 Ft Rail Extension Kit
- CHAMBERLAIN B2401 Smart Quiet Belt Drive Garage Door Opener, Gray
- Chamberlain B4603T MYQ Smart Garage Door Opener, Ultra Quiet Belt Drive, 3/4-HP Motor - Quantity 1

---

## 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.sk/products/4052526-chamberlain-group-g8808cb-p-chamberlain-8808cb-8-foot-compatible-whisper](https://www.desertcart.sk/products/4052526-chamberlain-group-g8808cb-p-chamberlain-8808cb-8-foot-compatible-whisper)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-10-16*