---
product_id: 47292657
title: "Performance Products 421127 Axle-Back Exhaust Kit, 1 Pack"
brand: "roush"
price: "NT$59179"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/47292657-performance-products-421127-axle-back-exhaust-kit-1-pack
store_origin: TW
region: Taiwan
---

# Aggressive sound tone & volume Higher airflow & less back pressure Fits 2011-2014 Mustang GT & GT500 Performance Products 421127 Axle-Back Exhaust Kit, 1 Pack

**Brand:** roush
**Price:** NT$59179
**Availability:** ✅ In Stock

## Summary

> 🔥 Turn your Mustang into a street legend with ROUSH power!

## Quick Answers

- **What is this?** Performance Products 421127 Axle-Back Exhaust Kit, 1 Pack by roush
- **How much does it cost?** NT$59179 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/47292657-performance-products-421127-axle-back-exhaust-kit-1-pack)

## Best For

- roush enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Engineered specifically for 2011-2014 Mustang GT 5.0L and 2011-2012 GT500 5.4L V8 models for seamless installation.
- • **Unleash the Roar:** Experience the signature ROUSH aggressive exhaust note that turns heads and commands attention.
- • **Cruise in Comfort:** Enjoy a powerful exhaust tone without the annoying in-cabin boom during everyday driving.
- • **Boosted Performance:** Optimized airflow reduces back pressure, delivering noticeable horsepower and torque gains.
- • **Durability Without Compromise:** Open-chamber muffler design eliminates fiberglass packing, ensuring longer-lasting performance and sound quality.

## Overview

The ROUSH Performance 421127 Axle-Back Exhaust Kit is a precision-engineered upgrade for 2011-2014 Mustang GT and 2011-2012 GT500 models, featuring an open-chamber muffler design that delivers a unique aggressive sound, improved airflow for increased horsepower and torque, and enhanced durability without fiberglass packing—all while minimizing in-cabin noise for a refined driving experience.

## Description

The ROUSH Axle-Back Mustang Exhaust Kit with Round Tips, designed to fit the 2011-2014 Mustang GT & 2011-2012 Mustang GT500, is an innovative exhaust system from ROUSH that features an open-chambered designed muffler (as opposed to conventional fiberglass-packing). The result is an aggressive sound that is unique to ROUSH, increased longevity (with no fiberglass packing), and increased horsepower & with additional airflow. Another added benefit of this system is the lack of the in-cockpit boom normally found with performance exhaust systems at cruising speeds.

## Features

- Fits 2011-2014 Mustang GT 5.0L V8 & 2011-2012 GT500 5.4L V8
- Upgraded aggressive sound tone and volume
- Provides higher air flow and less back pressure for increased horsepower and torque

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B07565NMK4 |
| Best Sellers Rank | #1,728,801 in Automotive (See Top 100 in Automotive) #64 in Automotive Replacement Axle-Back Exhaust Systems |
| Brand | Roush |
| Customer Reviews | 4.1 4.1 out of 5 stars (14) 4.1 out of 5 stars |
| Date First Available | August 23, 2017 |
| Item Model Number | 421127 |
| Item Weight | 27.6 pounds |
| Manufacturer | Roush Performance |
| Manufacturer Part Number | 421127 |
| Product Dimensions | 21.5 x 10.25 x 24 inches |

## Product Details

- **Brand:** Roush
- **Material:** Fiberglass
- **Vehicle Service Type:** Car
- **Installation Type:** Bolt-On
- **Manufacturer:** Roush Performance

## Images

![Performance Products 421127 Axle-Back Exhaust Kit, 1 Pack - Image 1](https://m.media-amazon.com/images/I/411gx4SNMPL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.tw/products/47292657-performance-products-421127-axle-back-exhaust-kit-1-pack](https://www.desertcart.tw/products/47292657-performance-products-421127-axle-back-exhaust-kit-1-pack)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-07-23*