Description
Overview
The Flowmaster 40 Series Chambered Muffler is the muffler that built the brand’s reputation for deep, aggressive sound. Engineered by the Flowmaster company as part of the Original 40 Series, this performance muffler delivers the unmistakable exterior and interior tone that made Flowmaster exhaust a household name. If you’re chasing that classic, hard-hitting Flowmaster sound, this is the exhaust muffler to reach for.
Built for enthusiasts who demand durability, the 40 Series is constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum strength and a long service life under real-world conditions. A high-temperature paint finish helps it stand up to the heat and elements that come with any hard-working exhaust system.
Aggressive Chambered Sound
As a chambered car muffler, the Flowmaster 40 Series produces a bold, aggressive sound level both inside and outside the vehicle. This isn’t a subtle whisper — it’s the raw, race-inspired growl that defines Flowmaster mufflers. Whether you’re building a street truck or upgrading your daily driver, this flowmaster muffler brings serious presence to any flowmaster exhaust system.
Fitment & Installation
This flowmaster 40 muffler features a universal design with a 3.00″ inlet diameter and a 9.50″ body width, making it a versatile choice for custom and OEM-style builds alike. It’s designed for Truck/SUV applications and uses new hangers (not included), so plan your installation hardware accordingly. Exhaust tips are sold separately, giving you the freedom to finish your setup exactly the way you want.
Key Highlights
- Original 40 Series chambered design for the classic aggressive Flowmaster tone
- Constructed of 16 gauge 409S stainless steel, fully MIG welded for maximum durability
- 3.00″ inlet diameter with a 9.50″ body width
- High-temperature paint finish built to handle exhaust heat
- Universal fitment for Truck/SUV applications
- Uses new hangers (not included); exhaust tips sold separately
When it comes to performance mufflers that deliver both attitude and build quality, few names carry the legacy of Flowmaster exhaust. The 40 Series remains the benchmark for anyone wanting an authentic flowmaster exhaust system with an unmistakable, aggressive voice. Add the Flowmaster 40 Series muffler to your build and give your ride the sound that made these mufflers legendary.
Warning: This product carries a California Proposition 65 warning.
