Description
Overview
The Flowmaster 80 Series Chambered Muffler is a crossflow-design muffler built for applications where the muffler mounts transversely behind the rear end. Its inlet sits next to one of the outlets on the same side of the case, making it an ideal solution for late-model muscle cars running a transverse exhaust layout. If you’re after that unmistakable, aggressive muscle car tone, the 80 Series delivers both inside the cabin and outside the vehicle.
Engineered as part of Flowmaster’s 80 Series Crossflow lineup, this muffler is a proven replacement for Camaros and Firebirds equipped with transverse mufflers. The cross-flow chambered design routes exhaust efficiently through the case while producing the deep, aggressive sound enthusiasts expect from a performance muscle car exhaust.
Built to Last
Durability is at the core of this muffler’s construction. It’s built from 16 gauge 409S stainless steel and fully MIG welded for maximum strength and long service life. A high-temperature paint finish helps the case stand up to the heat and elements it faces underneath your vehicle, so it looks and performs the part season after season.
Fitment & Configuration
This is a universal-fit muffler with a 2.50-inch inlet diameter and dual, transverse outlets, engineered specifically for the crossflow, behind-the-rear-end mounting position. Because the inlet is positioned next to one of the outlets on the same side of the case, it’s purpose-built for vehicles that use a transverse muffler layout. It’s an excellent match for late-model muscle car applications like Camaros and Firebirds.
Please note that this muffler uses new hangers, which are not included, and exhaust tips are sold separately. This allows you to tailor the installation and finishing touches to your specific build and preferences.
Highlights
- 80 Series Crossflow design for transverse, behind-the-rear-end muffler mounting
- Inlet located next to one of the outlets on the same side of the case
- Aggressive muscle car sound heard both inside and outside the vehicle
- 16 gauge 409S stainless steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for heat and element resistance
- 2.50-inch inlet diameter with dual (transverse) outlet location
Whether you’re restoring or upgrading a late-model muscle car with a transverse exhaust setup, the Flowmaster 80 Series Chambered Muffler brings the durable construction and aggressive sound that define the Flowmaster name. Pair it with new hangers and the exhaust tips of your choice to complete your build.
Warning: This product carries a California Proposition 65 warning. Emission Code: 5.













