Description
Overview
The Flowmaster 40 Series Delta Flow Chambered Muffler brings proven Flowmaster performance and a distinctly aggressive attitude to your street or strip build. This two-chamber muffler incorporates Flowmaster’s Delta Flow® technology, using strategically positioned Delta deflectors to generate increased exhaust scavenging. The result is better flow, stronger performance, and a smart balance of power and drivability that has made the 40 Series a benchmark in chambered muffler design.
Compared to the standard 40 Series, this Delta Flow version delivers a milder exterior tone and reduced interior resonance, so you get the muscular exhaust note you want on the outside without an overwhelming drone in the cabin. It’s the ideal choice for enthusiasts who want an aggressive sound level with more refined manners on the highway.
Built to Last
Durability is engineered in from the start. The muffler is constructed of 16-gauge aluminized steel and 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 real-world driving, whether you’re carving up back roads or making passes at the strip.
Key Highlights
- Two-chamber design with Flowmaster Delta Flow® technology and Delta deflectors for increased scavenging
- Aggressive exterior sound with 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
- 2.50″ inlet diameter
- Universal fitment for street/strip applications
Fitment & Installation
This is a universal-fit muffler engineered for street and strip vehicles, giving you the flexibility to integrate it into a wide range of custom and replacement exhaust setups. It features a 2.50-inch inlet diameter and mounts using new hangers, which are not included, so plan your installation hardware accordingly. Exhaust tips are sold separately, allowing you to finish your system exactly the way you want.
With an emission code of 5, the 40 Series Delta Flow is designed for the performance-minded driver looking to upgrade both the sound and the flow characteristics of their exhaust. Choose the Flowmaster 40 Series Delta Flow when you want that signature aggressive tone backed by rugged, MIG-welded construction and a design proven on countless street and strip machines.
Pair this muffler with your preferred piping and exhaust tips to build a complete system tailored to your vehicle and your driving style. Whether you’re chasing added scavenging for performance gains or simply want a bolder exhaust note, the 40 Series Delta Flow delivers Flowmaster quality you can count on.
