Description
Overview
The Flowmaster 40 Series Delta Flow Chambered Muffler delivers the aggressive, no-nonsense sound Flowmaster is known for, refined by the brand’s Delta Flow® technology. This two-chamber design uses precisely positioned Delta deflectors to generate increased exhaust scavenging, helping your engine breathe more efficiently while trimming down the harsh interior resonance you get from a standard 40 Series. The result is a muffler that keeps the deep, assertive exterior tone drivers want, without the fatiguing drone on longer drives.
Key Benefits
Built for the street/strip enthusiast, this 40 Series Delta Flow muffler strikes a balance between performance and livability. The Delta deflectors improve flow characteristics for better performance, while the milder exterior tone and reduced interior sound make it more refined than the classic 40 Series it evolves from. If you’re chasing that unmistakable Flowmaster growl with a touch more everyday comfort, this is the chambered muffler to reach for.
Built to Last
Durability is engineered in from the start. The muffler is constructed from 16 gauge aluminized steel and fully MIG welded for maximum strength, so it stands up to the heat, vibration, and demands of aggressive driving. A high-temperature paint finish adds an extra measure of protection against the elements and underbody conditions.
Highlights
- Two-chamber design featuring Flowmaster Delta Flow® technology
- Delta deflectors generate increased scavenging for better performance
- 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 added protection
- 2.25″ inlet diameter with an aggressive sound level
Fitment & Installation
This is a universal-fit muffler with a 2.25-inch inlet diameter, giving fabricators and DIY installers the flexibility to integrate it into a wide range of custom and replacement exhaust setups. It’s designed to work with new hangers, which are not included, so plan your installation hardware accordingly. Exhaust tips are sold separately, letting you finish the system exactly the way you want. The muffler carries an emission code of 5.
Whether you’re building a street-driven cruiser or a weekend strip machine, the Flowmaster 40 Series Delta Flow Chambered Muffler brings proven Delta Flow performance, aggressive tone, and rugged aluminized steel construction to your exhaust system. Choose it when you want the signature Flowmaster attitude with improved scavenging and a more refined cabin experience.
