---
product_id: 1324759
title: "40 Series Original Chambered Muffler – 2.50” Offset In / 2.50” Center Out – Aggressive Sound – 16-Gauge Aluminized Steel – For Muscle Cars, Street Rods, Trucks, SUVs & Strip Builds (42541)"
brand: "flowmaster"
price: "S$254"
currency: SGD
in_stock: true
reviews_count: 13
category: "Flowmaster"
url: https://www.desertcart.sg/products/1324759-40-series-original-chambered-muffler-2-50-offset-in-2
store_origin: SG
region: Singapore
---

# Aggressive, signature bark Two-chambered internal design 16-gauge aluminized steel durability 40 Series Original Chambered Muffler – 2.50” Offset In / 2.50” Center Out – Aggressive Sound – 16-Gauge Aluminized Steel – For Muscle Cars, Street Rods, Trucks, SUVs & Strip Builds (42541)

**Brand:** flowmaster
**Price:** S$254
**Availability:** ✅ In Stock

## Summary

> 🔥 Own the street with the iconic Flowmaster roar!

## Quick Answers

- **What is this?** 40 Series Original Chambered Muffler – 2.50” Offset In / 2.50” Center Out – Aggressive Sound – 16-Gauge Aluminized Steel – For Muscle Cars, Street Rods, Trucks, SUVs & Strip Builds (42541) by flowmaster
- **How much does it cost?** S$254 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/1324759-40-series-original-chambered-muffler-2-50-offset-in-2)

## Best For

- flowmaster enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure the Grind:** 16-gauge aluminized steel and MIG welding ensure long-lasting durability against heat and vibration.
- • **Boosted Performance Metrics:** Reduce back pressure to unlock noticeable gains in horsepower, torque, and throttle response.
- • **Unmistakable Aggressive Sound:** Turn heads with the legendary Flowmaster bark that commands attention on every street.
- • **Precision Two-Chambered Design:** Engineered for that bold tone and enhanced exhaust flow, perfect for muscle cars and custom builds.
- • **Universal Fit, Effortless Install:** Versatile inlet/outlet configurations simplify upgrades on trucks, SUVs, street rods, and more.

## Overview

The Flowmaster 40 Series Original Chambered Muffler delivers the classic aggressive exhaust sound muscle car enthusiasts crave, thanks to its two-chambered internal design. Crafted from durable 16-gauge aluminized steel with MIG welding, it enhances horsepower and torque by improving exhaust flow while fitting a wide range of vehicles with its universal inlet/outlet configuration.

## Description

Buy Flowmaster 40 Series Original Chambered Muffler – 2.50” Offset In / 2.50” Center Out – Aggressive Sound – 16-Gauge Aluminized Steel – For Muscle Cars, Street Rods, Trucks, SUVs & Strip Builds (42541): Mufflers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: The boss - Great muffler 40 series flowmaster change from a single exhaust to a dual out exhaust Great sound
Review: Great sound a more oower. I love it. - This muffler isbadass. It sounds awesome!

## Features

- LEGENDARY SOUND: This is the original Flowmaster muffler that enthusiasts know and love! Famous for its bold, aggressive bark and signature tone. It delivers the unmistakable attitude and street presence that made Flowmaster a legend.
- TWO-CHAMBERED INTERNAL DESIGN: Flowmaster’s classic two-chambered layout delivers that bold, aggressive exhaust sound Flowmaster is known for. Perfect for muscle cars, street rods, trucks, off-road rigs, and custom builds.
- PROVEN PERFORMANCE: Enhances airflow and reduces back pressure to help boost horsepower, torque, and throttle response.
- BUILT TO LAST: Made from 16-gauge aluminized steel and fully MIG-welded to withstand high heat and vibration with no internal packing to blow out or wear down.
- UNIVERSAL FITMENT: Designed for custom and modified exhaust systems, with multiple inlet/outlet sizes and configurations (center/offset, dual) for simplified installation and optimal fit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000182DMO |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #21,783 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Performance Exhaust Mufflers #206 in Automotive Emission & Exhaust Products |
| Brand | Flowmaster |
| Configuration | Center/Offset |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,296) |
| Date First Available | September 1, 2004 |
| Exterior | Painted |
| Global Trade Identification Number | 00700042010332, 00700042029426 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 10 pounds |
| Item dimensions L x W x H | 19.7 x 10.2 x 4.5 inches |
| Item model number | 42541 |
| Manufacturer | Flowmaster |
| Manufacturer Part Number | 42541 |
| Model | 42541 |
| OEM Part Number | 42541 |
| Product Dimensions | 19.7 x 10.2 x 4.5 inches |
| Shape | Oval |
| UPC | 700042010332 700042029426 |
| Vehicle Service Type | Car |

## Product Details

- **Brand:** Flowmaster
- **Item Weight:** 10 Pounds
- **Item dimensions L x W x H:** 19.7 x 10.2 x 4.5 inches
- **Material:** Plastic
- **Vehicle Service Type:** Car

## Images

![40 Series Original Chambered Muffler – 2.50” Offset In / 2.50” Center Out – Aggressive Sound – 16-Gauge Aluminized Steel – For Muscle Cars, Street Rods, Trucks, SUVs & Strip Builds (42541) - Image 1](https://m.media-amazon.com/images/I/71u5C80+TOL.jpg)

## Questions & Answers

**Q: Will these fit a 2004 ford crown victoria interceptor ?**
A: universal mufflers do not directly fit any application . They require measuring , cutting adding pipe etc . Direct fitments are under cat back systems .

**Q: Will this fit my 1997 k1500?**
A: Yes, the Flowmaster 42541 40 Series Muffler - 2.50 Offset IN / 2.50 Center OUT - Aggressive Sound, Black will fit your 1997 K1500. It is a universal muffler, so it can be fitted to any vehicle with a 2.50 inch exhaust system.

However, it is important to note that the Flowmaster 40 Series mufflers are known for being loud. If you are looking for a more subdued sound, you may want to consider a different muffler series, such as the 50 or 60 Series.

**Q: spec say it wont fit but it has the same demensions and intake and oulet pipe size, will it fit on my 1997 dodge ram 1500**
A: If the pipe inlet is 2.5 inches and the pipe outlet is 2.5 inches, it will work.

**Q: Is this muffler lound on the inside**
A: It dose resonate inside the car quite a bit

## Customer Reviews

### ⭐⭐⭐⭐⭐ The boss
*by B***S on November 29, 2025*

Great muffler 40 series flowmaster change from a single exhaust to a dual out exhaust Great sound

### ⭐⭐⭐⭐⭐ Great sound a more oower. I love it.
*by C***N on November 26, 2025*

This muffler isbadass. It sounds awesome!

### ⭐⭐⭐⭐⭐ Good volume
*by J***S on October 17, 2025*

Great muffler

## Frequently Bought Together

- Flowmaster 42541 40 Series Chambered Muffler
- EVIL ENERGY 2.5 Inch Exhaust Clamp,2 1/2" Butt Joint Band Clamp Sleeve Coupler Stainless Steel for Pipes,Mufflers,Catalytic Converters 2PC
- Walker 36272 Exhaust System Hanger

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-18*