Description
Overview
The Flowmaster 40 Series Chambered Muffler is the muffler that built the brand’s reputation. As the Original 40 Series, this flowmaster muffler is engineered to deliver that unmistakable, deep, aggressive tone Flowmaster is known for — both outside and inside the cabin. If you’ve been chasing the classic flowmaster exhaust sound, this is the exhaust muffler that defines it.
Built as a true chambered performance muffler, the flowmaster 40 uses Flowmaster’s proven chamber technology to produce an aggressive sound level without adding restrictive packing. It’s a straightforward, race-bred design that has made the flowmaster 40 series a go-to choice for enthusiasts building an exhaust setup with real attitude.
Durable, No-Nonsense Construction
Every detail is focused on longevity. This flowmaster muffler is constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability, so it stands up to the heat and vibration of daily driving and hard use. A high-temperature paint finish protects the exterior and helps it hold up under the demands of a working exhaust system.
Key Benefits
- Original 40 Series chambered design that delivers the classic, aggressive Flowmaster tone
- 16 gauge aluminized steel body, fully MIG welded for maximum durability
- High-temperature paint finish built to handle exhaust heat
- 2.25″ inlet diameter for the right flow match to your system
- Universal fitment that suits a wide range of street rod and custom builds
- Emission Code 5 rated
Sound & Performance
The 40 Series is all about presence. This is one of the most recognized performance mufflers on the market because it produces an aggressive exterior and interior tone that lets everyone know your build means business. As part of a complete flowmaster exhaust system, it brings the bold character that made the flowmaster company a household name among performance and street rod enthusiasts.
Fitment & Configuration
This car muffler features a 2.25″ inlet diameter and a universal fitment, making it a versatile choice for custom exhaust work and street rod applications. Because it’s universal, it drops into a wide variety of builds where a genuine flowmaster exhaust tone is the goal. Exhaust tips are sold separately, so you can pair the muffler with the tip style that matches your setup.
Whether you’re upgrading an existing exhaust muffler car setup or building a fresh flowmaster exhaust system from the ground up, the Original 40 Series delivers the durable construction and aggressive sound that made Flowmaster mufflers a benchmark. For drivers who want that original Flowmaster sound backed by rugged, fully welded construction, the flowmaster 40 series muffler is a proven, straightforward choice.
