---
product_id: 4052526
title: "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: "฿7223"
currency: THB
in_stock: true
reviews_count: 13
category: "Chamberlain"
url: https://www.desertcart.co.th/products/4052526-group-g8808cb-p-chamberlain-8808cb-8-foot-compatible-whisper-drive
store_origin: TH
region: Thailand
---

# 8-foot steel rail extension Complete hardware & replacement belt Whisper-quiet belt drive compatible 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:** ฿7223
**Availability:** ✅ In Stock

## Summary

> 🚪 Elevate your garage game with silent strength and effortless style!

## Quick Answers

- **What is this?** 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?** ฿7223 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/4052526-group-g8808cb-p-chamberlain-8808cb-8-foot-compatible-whisper-drive)

## 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

- • **All-Inclusive Kit:** Includes replacement belt and all necessary hardware—no extra trips needed.
- • **Whisper-Quiet Operation:** Compatible with Whisper Drive models for silent, smooth door movement.
- • **DIY-Friendly Installation:** Quick install rail system designed for hassle-free, solo setup.
- • **Seamless 8-Foot Extension:** Perfectly engineered to fit your taller garage doors with ease.
- • **Robust Structural Steel Rail:** Enhances durability and stability for long-lasting performance.

## Overview

The Chamberlain G8808CB-P is an 8-foot structural steel rail extension kit designed for Chamberlain Whisper Drive and Whisper Drive Plus belt drive garage door openers. It includes a replacement belt and all necessary hardware, enabling easy installation for garage doors up to 8 feet high. Engineered for durability and whisper-quiet operation, this kit enhances the structural integrity of your garage door system while supporting a smooth, silent experience.

## 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: 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.
Review: Perfect for use on larger door - Worked great with new Chamberlain opener. Silent operation.

## 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 |
| Assembly Required | Yes |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,664 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Garage Door Opener System Parts |
| Brand | CHAMBERLAIN |
| Certification | not_applicable |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,772) |
| Date First Available | January 1, 2008 |
| Global Trade Identification Number | 00012381180028 |
| Included Components | Hardware, Manual, Rail Extension, Replacement Belt |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 2.6 pounds |
| Item model number | G8808CB-P |
| Manufacturer | Chamberlain |
| Material | steel |
| Part Number | G8808CB-P |
| Product Dimensions | 1 x 37.7 x 1.25 inches |
| Style | Modern |
| UPC | 012381180028 012381088089 |
| Warranty Description | 1 Year |

## Product Details

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

## Images

![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)

## 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

### ⭐⭐⭐⭐⭐ 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 for use on larger door
*by S***E on December 24, 2025*

Worked great with new Chamberlain opener. Silent operation.

### ⭐⭐⭐⭐⭐ Belt rail extended with extender for extending
*by J***J on November 10, 2025*

This worked as expected- was easy to install and pretty easy to do. Worth the money and expected quality for chamberlain.

## 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

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-27*