Description
Overview
The Flowmaster 40 Series Delta Flow Exhaust Muffler brings proven performance sound and durability to virtually any build. Engineered with Flowmaster’s two-chamber Delta Flow® design, this muffler is a smart upgrade for anyone looking to shop for exhaust components that deliver an aggressive tone without the harsh drone of a standard 40 series. Whether you’re piecing together a full performance exhaust or refreshing a tired car exhaust, this Flowmaster muffler is built to perform on the street and at the strip.
At the heart of the design are Flowmaster’s Delta deflectors, which generate increased scavenging for better performance and reduced interior sound. Compared to the standard 40 series, this two-chamber configuration produces a milder exterior tone and reduced interior resonance, so you get that unmistakable Flowmaster muffler growl outside while keeping the cabin more livable on long drives.
Built to Last
Every unit is constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability, then finished with a high-temperature paint that stands up to the heat and elements of daily exhaust automobile use. This is the kind of construction that keeps a mufflers upgrade performing season after season, making it a dependable centerpiece for any exhaust system.
Key Details & Fitment
This is a universal-fit muffler with a 2.25″ inlet diameter and a dual outlet location, giving you flexibility to integrate it into a custom cat back exhaust system or a straightforward muffler swap. It mounts using new hangers (not included), and exhaust tips are sold separately, so you can tailor the finished look to your vehicle. Rated for Street/Strip use with an emission code of 5, it’s designed for enthusiasts who want a purposeful, aggressive sound level.
- Flowmaster 40 Series Delta Flow® two-chamber design
- Delta deflectors increase scavenging for better performance and reduced interior sound
- Milder exterior tone and reduced interior resonance versus the standard 40 series
- 16 gauge aluminized steel construction, fully MIG welded
- High-temperature paint finish for lasting protection
- Universal fitment, 2.25″ inlet, dual outlet location
Why Flowmaster
When comparing a Flowmaster muffler against other mufflers on the market, it comes down to the balance of tone, performance, and build quality. This 40 Series Delta Flow strikes that balance, giving you an aggressive exhaust note with the scavenging benefits that help your engine breathe. Pair it with your preferred piping to complete a cat back muffler system or a broader catback exhaust project, and enjoy a muffler engineered to look, sound, and perform the part. Choose the setup that fits your build and add the hangers and exhaust tip that match your goals.
