Description
Overview
The Flowmaster Exhaust Muffler is a purpose-built race muffler engineered for vehicles that run alcohol-based race fuels. Part of the 40 Series Delta Force lineup, this muffler brings Flowmaster’s proven racing pedigree to your build with an aggressive sound level and a rugged high-temperature paint finish that stands up to demanding track conditions. If you’re ready to shop for exhaust hardware that’s designed for competition, this is a specialty piece created with real-world race development behind it.
What sets this alcohol race muffler apart is its strategically placed “burn holes” positioned inside the muffler in all of the low-pressure areas. These burn holes are designed to prevent damage from excess methanol fuel puddling and backfiring on deceleration — a critical safeguard for vehicles running special race fuels. It’s a thoughtful engineering detail that reflects years of Flowmaster racing experience.
Race-Developed Engineering
Through years of racing and partnerships with leading race sanctioning bodies, Flowmaster developed these specialty mufflers specifically for race vehicles competing in organizations such as NASCAR, ARCA, and the W.O.O. sprint car series. That development addressed the real challenges racers face, including low ground clearance, special race fuels, and tight packaging restraints. When you’re building a performance exhaust setup for the track, this level of purpose-built design matters.
Key Highlights
- Muffler Series: 40 Series Delta Force
- Inlet Diameter: 3.50″
- Outlet Location: Offset (Same Side)
- Sound Level: Aggressive
- Finish: High-Temperature Paint
- Vehicle Type: Race — Emission Code 5
- Fitment: Universal
Configuration & Mounting
This muffler features a 3.50″ inlet diameter with an offset outlet on the same side, giving you a compact, packaging-friendly layout for tight race applications. It mounts using new hangers (not included), and exhaust tips are sold separately, so you can tailor the finishing details to your exact car exhaust configuration. As a universal-fit muffler, it offers flexibility to integrate into a custom cat back exhaust system or a dedicated race exhaust build.
Fitment
With universal fitment and a Race vehicle type designation (Emission Code 5), this Flowmaster muffler is intended for off-road and competition use. Because it uses new hangers that are not included and tips are sold separately, plan your installation and component list accordingly to complete your exhaust system exactly the way you want it.
Whether you’re refreshing a competition mufflers setup or assembling a full performance exhaust from the ground up, the Flowmaster 40 Series Delta Force alcohol race muffler delivers the aggressive tone and race-focused engineering that serious builders look for in a Flowmaster muffler.
