Description
Overview
The Flowmaster 40 Series Delta Flow Chambered Muffler delivers the aggressive, race-inspired attitude Flowmaster is known for, refined with the brand’s proven Delta Flow® technology. This two-chamber design uses Delta deflectors to generate increased scavenging for better performance while taming interior sound, giving you a muffler that sounds serious on the outside without overwhelming the cabin on the inside.
Engineered for Street/Strip use, this 40 Series Delta Flow muffler strikes the balance between an aggressive tone and everyday drivability. Compared to the standard 40 Series, it offers a milder exterior tone and reduced interior resonance, making it an ideal choice for drivers who want a bold exhaust note that still lives comfortably on the highway and around town.
Built to Last
Durability is built into every seam. The muffler is constructed of 16 gauge aluminized steel and is fully MIG welded for maximum strength and long service life. A high-temperature paint finish helps the housing stand up to the heat and demands of a working exhaust system, so it holds up mile after mile.
Key Highlights
- Two-chamber Delta Flow® design with Delta deflectors for increased scavenging and better performance
- Aggressive sound level with a milder exterior tone and reduced interior resonance versus the standard 40 Series
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for lasting heat resistance
- 2.25″ inlet diameter
- Universal fitment for flexible Street/Strip applications
Fitment & Installation
This is a universal-fit muffler with a 2.25″ inlet diameter, giving fabricators and enthusiasts the flexibility to integrate it into a wide range of custom and replacement exhaust setups. It uses new hangers (not included), so plan to add the appropriate hangers for your application. Exhaust tips are sold separately, allowing you to finish the system exactly the way you want.
Sound & Performance
If you’re after that unmistakable Flowmaster growl with a smarter approach to resonance, the 40 Series Delta Flow is the answer. The scavenging benefits of the Delta deflectors help the engine breathe while the chambered design keeps the tone aggressive under acceleration and more composed at cruise. It’s the muffler for drivers who want their build heard, without sacrificing comfort behind the wheel.
Carrying an Emission Code of 5 and categorized as an exhaust muffler in Flowmaster’s 40 Series Delta Flow lineup, this muffler is a dependable, performance-minded upgrade for your Street/Strip project. Choose the setup that fits your build, add your hangers and tip, and enjoy the classic Flowmaster sound backed by rugged, fully welded construction.
