Description
Overview
The Flowmaster 40 Series Chambered Muffler is the muffler that built the legend behind the Flowmaster company — a no-compromise performance muffler engineered to deliver the deep, aggressive tone drivers instantly recognize. As part of the Original 40 Series, this flowmaster muffler produces an aggressive exterior and interior sound, making it the go-to exhaust muffler for enthusiasts chasing that unmistakable Flowmaster exhaust rumble.
Built for durability, this flowmaster 40 muffler is constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum strength. The chambered design is what gives the flowmaster 40 series its signature character — a bold, aggressive note that stands out on start-up and pulls hard through the RPM range. If you want the original Flowmaster sound, this is the exhaust muffler car builders reach for.
Key Benefits
Whether you are refreshing a tired system or building a fresh flowmaster exhaust system from the ground up, this performance muffler brings proven engineering and a race-bred attitude to your ride. The universal fitment makes it a flexible foundation for custom flowmaster exhaust systems, while the high-temperature paint finish helps it hold up to the heat of hard driving.
- Original 40 Series chambered design for an aggressive interior and exterior tone
- 16 gauge 409S stainless steel construction, fully MIG welded for maximum durability
- 3.00″ inlet diameter with a 9.50″ body width
- High-temperature paint finish for lasting appearance under heat
- Universal fitment for flexible installation across builds
- Delivers the classic, unmistakable Flowmaster sound
Fitment & Installation
This flowmaster exhaust muffler is a universal-fit unit, making it ideal for classic muscle car builds and custom fabrication. It features a 3.00″ inlet diameter and a 9.50″ body width. Installation uses new hangers, which are not included, so plan to source the correct mounting hardware for your application. Exhaust tips are sold separately, giving you the freedom to finish the system exactly how you want.
The Original Flowmaster Sound
Among performance mufflers, few names carry the reputation of Flowmaster exhaust. The 40 Series is where that reputation started — an aggressive, race-inspired car muffler that transformed the way enthusiasts think about sound. If you have been searching for the right flowmaster muffler to bring your project to life, the Original 40 Series delivers the tone, durability, and heritage you expect.
Please note this product carries a California Proposition 65 warning. Pair it with the rest of your components to complete a true flowmaster exhaust system and enjoy the legendary performance muffler that set the standard for aggressive sound.
