---
product_id: 717197
title: "40670 ProXS ProXS Muffler 3\" Center Inlet/ 2.25\" Dual Outlet, 4\" x 9.5\" Oval, 19\" Long Body, 25\" Overall Length. Universal Part. Reversible Design."
brand: "borla"
price: "$518.17"
currency: USD
in_stock: true
reviews_count: 8
category: "Borla"
url: https://www.desertcart.us/products/717197-40670-proxs-proxs-muffler-3-center-inlet-2-25-dual
store_origin: US
region: United States of America
---

# Precision 25" Overall Length Reversible Universal Fit T-304 Stainless Steel Durability 40670 ProXS ProXS Muffler 3" Center Inlet/ 2.25" Dual Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Universal Part. Reversible Design.

**Brand:** borla
**Price:** $518.17
**Availability:** ✅ In Stock

## Summary

> 🔥 Unleash the Power, Hear the Difference! 🔊

## Quick Answers

- **What is this?** 40670 ProXS ProXS Muffler 3" Center Inlet/ 2.25" Dual Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Universal Part. Reversible Design. by borla
- **How much does it cost?** $518.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/717197-40670-proxs-proxs-muffler-3-center-inlet-2-25-dual)

## Best For

- borla enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Crafted from premium T-304 stainless steel for unmatched corrosion resistance and longevity under extreme conditions.
- • **Made in the USA:** Proudly manufactured domestically, guaranteeing quality craftsmanship and reliability.
- • **Signature Sound:** Experience the iconic 'BORLA Sound of Power'—smooth, aggressive, and free from annoying pops.
- • **Tailored Versatility:** Universal, reversible design ensures a perfect fit and easy installation on a wide range of vehicles.
- • **Power Meets Precision:** 3" center inlet and dual 2.25" outlets optimize exhaust flow for enhanced power and torque.

## Overview

The BORLA 40670 ProXS Muffler is a high-performance, T-304 stainless steel exhaust component featuring a 3" center inlet and dual 2.25" outlets. Its reversible, universal design allows for versatile installation, delivering enhanced power, torque, and the distinctive BORLA sound. Measuring 25" overall length with a 4" x 9.5" oval body, this USA-made muffler combines durability with precision fit for automotive enthusiasts seeking both performance and style.

## Description

Borla's T-304 stainless steel high performance exhaust system is built to last under extreme conditions. Borla exhaust systems give you more power and torque, longer engine life, precision fit, and the distinctive "BORLA Sound of Power" recognized by automotive enthusiasts around the world.

Review: Nice smooth sound - It sounds really good on my V8 Suburban, does not have that popping sound like my old flow master did. Which I love….. I couldn’t stand that old glass pack popping sound drove me crazy lol
Review: Borla - Nice muffler can see all the way through it, no restriction at all. Thought it would be louder but with 3 catalytic converters on a 3.5 2017 Tacoma not as loud as I would have liked but still nice sound and don’t have any dash lights coming on so far happy with it. May get some tips that are bigger to give a deeper sound but still not found any that sounds like I would want them.

## Features

- T-304 Stainless Steel
- Universal Muffler
- Reversible Design
- Made In USA
- Un-Notched necks are designed for weld in installation. If clamping, use band clamps 18003 & 18006.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000CIGATK |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #1,043,429 in Automotive ( See Top 100 in Automotive ) #357 in Automotive Performance Exhaust Mufflers #21,964 in Automotive Emission & Exhaust Products |
| Brand Name | Borla |
| Compatible with Vehicle Type | Car |
| Customer Reviews | 4.7 4.7 out of 5 stars (34) |
| Global Trade Identification Number | 00808422406703 |
| Included Components | Muffler |
| Inlet Connection Size | 3 Inches |
| Item Type Name | Muffler |
| Manufacturer | BORLA |
| Manufacturer Part Number | 40670 |
| Manufacturer Warranty Description | Manufacturer warranty |
| Material Type | Stainless Steel |
| Model Number | 40670 |
| OEM Equivalent Part Number | 40670 |
| Part Interchange Info | 40670 |
| Shape | Oval |
| UPC | 808422406703 |

## Product Details

- **Brand:** Borla
- **Inlet Connection Size:** 3 Inches
- **Material:** Stainless Steel
- **Shape:** Oval
- **Vehicle Service Type:** Car

## Images

![40670 ProXS ProXS Muffler 3" Center Inlet/ 2.25" Dual Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Universal Part. Reversible Design. - Image 1](https://m.media-amazon.com/images/I/514qHr+VMAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice smooth sound
*by D***C on August 1, 2025*

It sounds really good on my V8 Suburban, does not have that popping sound like my old flow master did. Which I love….. I couldn’t stand that old glass pack popping sound drove me crazy lol

### ⭐⭐⭐⭐⭐ Borla
*by G***R on February 4, 2024*

Nice muffler can see all the way through it, no restriction at all. Thought it would be louder but with 3 catalytic converters on a 3.5 2017 Tacoma not as loud as I would have liked but still nice sound and don’t have any dash lights coming on so far happy with it. May get some tips that are bigger to give a deeper sound but still not found any that sounds like I would want them.

### ⭐⭐⭐⭐ A little more drone than expected but love the song
*by D***R on October 18, 2020*

Replaced factory muffler on a 2014 RAM 1500, 5.7 hemi. Nice deep rumbling cold start.. Not overly loud at idle or up to 1200 rpm. Deeper and more "buttery" than stock.. At full throttle it's a beautiful howl. No rasp. Cruising at 45 - 60 mph it's almost silent in the cab but at a sustained 1500-2000rpm / 70-75mph there is a drone. Not so much that you couldn't hold a conversation but it's noticable. It is a flow thru, reversible muffler so you have to weigh the power with the noise..

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**Shop now:** [https://www.desertcart.us/products/717197-40670-proxs-proxs-muffler-3-center-inlet-2-25-dual](https://www.desertcart.us/products/717197-40670-proxs-proxs-muffler-3-center-inlet-2-25-dual)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-16*