---
product_id: 71608761
title: "MBRP GMAL421 4\" Aluminized Exhaust Front-Pipe"
brand: "mbrp"
price: "HK$925"
currency: HKD
in_stock: false
reviews_count: 1
url: https://www.desertcart.hk/products/71608761-mbrp-gmal421-4-aluminized-exhaust-front-pipe
store_origin: HK
region: Hong Kong
---

# 16 lbs weight 4" diameter Aluminized steel MBRP GMAL421 4" Aluminized Exhaust Front-Pipe

**Brand:** mbrp
**Price:** HK$925
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate Your Ride with MBRP's Ultimate Front Pipe!

## Quick Answers

- **What is this?** MBRP GMAL421 4" Aluminized Exhaust Front-Pipe by mbrp
- **How much does it cost?** HK$925 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/71608761-mbrp-gmal421-4-aluminized-exhaust-front-pipe)

## Best For

- mbrp enthusiasts

## Why This Product

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

## Key Features

- • **Join the Elite:** Upgrade your exhaust system and experience the difference that performance enthusiasts rave about.
- • **Unleash Your Power:** Transform your Duramax system with this high-performance front pipe.
- • **Perfect Fit Guaranteed:** Designed specifically for GM Duramax models, ensuring a seamless integration.
- • **Effortless Installation:** Enjoy a simple bolt-on design that gets you back on the road in no time.
- • **Durability Meets Efficiency:** Crafted from aluminized steel for long-lasting performance and corrosion resistance.

## Overview

The MBRP GMAL421 4" Aluminized Exhaust Front-Pipe is engineered for optimal performance in Duramax systems. Weighing 16 pounds and made from durable aluminized steel, this front pipe features a simple bolt-on installation for hassle-free upgrades. Designed specifically for GM models, it promises a perfect fit and enhanced exhaust efficiency.

## Description

MBRP GMAL421 There is always someone who wants to push the limit, someone who wants all the cool parts for their Duramax truck. MBRP offers a few extra pieces that were designed specifically for your truck. Why not get the most complete Duramax exhaust system on the market today. Simply purchase the MBRP front pipe and you have the most efficient system available for your Duramax.

## Features

- 4 inch front pipe with flange
- Aluminized
- Create the most efficient Duramax system on the market with this front pipe
- Simple bolt-on installation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | MBRP |
| UPC | 882963100641 608067709623 |
| Global Trade Identification Number | 00882963100641 |
| OEM Part Number | GMAL421 |
| Item Weight | 16 pounds |
| Item model number | GMAL421 |
| Manufacturer Part Number | GMAL421 |

## Product Details

- **Brand:** MBRP
- **Material:** Aluminum
- **Vehicle Service Type:** Truck
- **Shape:** Round
- **Installation Type:** Bolt-On

## Images

![MBRP GMAL421 4" Aluminized Exhaust Front-Pipe - Image 1](https://m.media-amazon.com/images/I/51hnoPqLt+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Excellent
  

*by J***8 on Reviewed in the United States on September 2, 2013*

I have a 07 silverado classic 6.6 duramax. This item fit perfect I went from a 4" up to a 5" to a 6" tip. All mbrp

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**Shop now:** [https://www.desertcart.hk/products/71608761-mbrp-gmal421-4-aluminized-exhaust-front-pipe](https://www.desertcart.hk/products/71608761-mbrp-gmal421-4-aluminized-exhaust-front-pipe)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-26*