Description
Overview
The Flowmaster 80 Series Chambered Muffler is a cross-flow performance muffler engineered for applications where the muffler is mounted in front of the axle. Its inlet sits next to the outlet on the same side of the case, making it the go-to choice for builders who want a clean, side-exit style layout in front of the rear tires. If you’re chasing that classic, factory-inspired routing reminiscent of AAR Cuda exhaust systems, this 80 Series Crossflow design delivers exactly that geometry.
Flowmaster’s chambered technology is tuned to produce an aggressive muscle car tone both inside and outside the vehicle. It’s an excellent replacement for late-model muscle cars, as well as cars and trucks that want a purposeful, throaty exhaust note without sacrificing durability.
Built to Last
Every unit 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 case stand up to the heat and conditions of everyday driving, so the muffler looks and performs the part underneath your build.
Key Highlights
- 80 Series Crossflow chambered design for a bold, aggressive muscle car sound inside and out
- Offset outlet located on the same end as the inlet for compact, side-exit routing in front of the axle
- 2.50-inch inlet diameter to match your exhaust plumbing
- 16-gauge aluminized steel construction, fully MIG welded for durability
- High-temperature paint finish for heat resistance
- Universal fitment ideal for custom and replacement exhaust builds
Configuration & Fitment
This is a universal-fit muffler, giving fabricators and DIY builders the flexibility to integrate it into custom exhaust routing or replace a worn factory unit. The cross-flow, same-end inlet and offset outlet layout is specifically suited to setups where the muffler lives ahead of the rear axle for a side-exit look similar to the classic AAR Cuda systems.
Please note the muffler uses new hangers, which are not included, so plan your mounting hardware accordingly. Exhaust tips are sold separately, allowing you to finish the system with the tip style that matches your vehicle. With a 2.50-inch inlet, confirm your piping matches for a proper fit before installation.
Whether you’re refreshing a late-model muscle car or fabricating a custom side-exit system, the Flowmaster 80 Series Chambered Muffler pairs signature aggressive sound with rugged aluminized-steel construction to deliver the tone and toughness your build deserves.









