Description
Overview
The Flowmaster Super HP-2 Muffler in 409SS takes the proven laminar core of Flowmaster’s classic HP-2 muffler and wraps it in a new, compact square case. The result is the same dependable performance and moderate exhaust tone that Flowmaster’s laminar flow designs are known for, now packaged in a sleeker, more modern shape that fits cleaner under trucks and SUVs. If you want a straightforward performance upgrade with a refined, aggressive character, the Super HP-2 delivers.
At the heart of this muffler is Flowmaster’s laminar flow core, engineered to keep exhaust gases moving efficiently while shaping a moderate, purposeful tone. That combination gives you noticeable performance benefits without the drone or excessive volume that comes with cheaper designs. It’s a balanced setup built for daily-driven trucks and SUVs that still need to breathe.
Case, Finish & Build
This version features a durable 409S stainless steel case protected by a high-temperature paint finish, so it stands up to the heat and elements that come with an exhaust environment. The compact square case gives the Super HP-2 its clean, low-profile look while housing the same performance core that has made the HP-2 series a trusted choice.
Fitment & Configuration
The Super HP-2 is a universal-fit muffler with a 2.50 in. inlet diameter, making it a versatile building block for custom and replacement exhaust work on Truck/SUV applications. Because it’s a universal design, you can plan your routing and placement to suit your build. Exhaust tips are sold separately, so you can finish the system with the tip style that matches your setup.
- Proven Flowmaster laminar flow core for efficient exhaust flow
- Compact square case with sleek, modern styling
- Durable 409S stainless steel construction
- High-temperature paint finish for heat and corrosion resistance
- 2.50 in. inlet diameter, universal fitment
- Aggressive yet moderate tone tuned for street-driven trucks and SUVs
- Backed by Flowmaster’s Lifetime Limited Warranty
Sound & Performance
Expect an aggressive sound level with the controlled, moderate tone that Flowmaster’s laminar mufflers are engineered to produce. It’s the kind of exhaust note that lets your truck or SUV announce itself under throttle while staying comfortable for everyday driving and highway cruising.
Whether you’re building a custom exhaust from scratch or upgrading a worn factory muffler, the Super HP-2 in 409SS pairs stainless durability with performance-minded flow in a compact, good-looking package. Add your preferred exhaust tip and you have a clean, purpose-built finish for your Truck/SUV. Please note this product carries a California Proposition 65 warning.









