Description
Overview
The Flowmaster 40 Series Delta Force Race Muffler is engineered for competitors who need a race-ready muffler that tames the raw volume of open headers without sacrificing performance. Built around Flowmaster’s proven Delta Flow technology, the 40 Series Delta Force delivers excellent power characteristics alongside good sound reduction qualities, making it a purpose-built choice for racing applications where a muffler is required.
Flowmaster recommends this muffler for all racing applications that call for a substantial decibel reduction over open headers. If your class, track, or sanctioning body enforces a sound limit, the 40 Series Delta Force lets you stay compliant while keeping the aggressive, motivated tone that serious race builds demand.
Key Benefits
The Delta Flow internal design is the heart of this muffler, promoting strong exhaust scavenging and power delivery while knocking down the extreme decibel levels produced by open headers. The result is an aggressive sound level that announces intent on the starting line without crossing into uncontrolled open-header territory.
Finished in high-temperature paint, the housing is prepared to withstand the heat that comes with hard-driven race exhaust systems. As a universal-fit muffler, it slots into a wide range of custom and purpose-built exhaust routing, giving fabricators and racers the flexibility to integrate it into the setup they need.
- Delta Flow technology for excellent power characteristics with good sound reduction
- Aggressive sound level with substantial decibel reduction over open headers
- High-temperature paint finish built for the demands of race exhaust
- Universal fitment for flexible custom exhaust integration
- 2.50″ inlet diameter
- 40 Series Delta Force muffler series, purpose-built for race vehicles
Configuration & What’s Included
This is a race-oriented muffler designed to be mounted using new hangers, which are not included, so plan your installation hardware accordingly. Exhaust tips are sold separately, giving you the freedom to finish the system exactly the way your build calls for. The 2.50″ inlet diameter should be confirmed against your existing exhaust routing before installation.
Fitment
The 40 Series Delta Force carries a universal fitment and is classified as a race vehicle type muffler within the exhaust category. Because it is universal, it is intended for custom fabrication and racing applications rather than a direct bolt-in replacement — verify your inlet size, mounting points, and clearance during the planning stage. Please note this product carries a California Proposition 65 warning and is assigned Emission Code 5.
For racers who want the unmistakable, aggressive character of a Flowmaster while meeting sound requirements at the track, the 40 Series Delta Force Race Muffler brings Delta Flow performance and heat-ready construction together in a proven package.
