Flowmaster 80 Series Chambered Muffler – 2.5” - Offset

Flowmaster 80 Series Chambered Muffler – 2.5” - Offset In/Dual Out – Aggressive Sound – Aluminized Steel – Performance Exhaust for F-Body Vehicles (Camaro, Firebird, Trans Am) - Muscle Cars, 42583
- AGGRESSIVE FLOWMASTER SOUND: Transverse-mounted design delivers an aggressive exterior sound level with a deep tone, while maintaining moderate interior resonance for a balanced driving experience. It’s the ideal muffler for rear-mounted systems, making it a favorite among muscle car builders, restorers, and weekend racers. Perfect for muscle cars, retro builds, and tight-clearance applications like GM F-body vehicles (Camaro & Firebird).
- PERFECT FOR GM F-BODY VEHICLES: Designed for tight-clearance performance cars like the Chevrolet Camaro, Pontiac Firebird, and Trans Am. The transverse crossflow chambered design enhances exhaust scavenging and airflow, improving horsepower, throttle response, and delivering the aggressive Flowmaster tone. This space-saving setup fits in the stock location behind the rear axle, making it ideal for muscle cars, retro builds, and other tight-clearance applications without requiring a full custom exhaust.
- DURABLE CONSTRUCTION: Built from 16-gauge aluminized steel and fully MIG-welded for maximum strength and longevity. Resists heat, corrosion, and road damage for years of dependable performance.
- PERFORMANCE-DRIVEN FITMENT: Precision-engineered for tight-clearance applications including classic GM F-body cars, retro-mods, and custom builds. Ideal for rear-mounted systems, the transverse layout mounts neatly behind the rear axle with no major modifications required. Main case dimensions: 4” x 9.5” x 15”.
- UNIVERSAL CONFIGURATIONS AVAILABLE: Offered in multiple inlet/outlet setups to match a variety of performance exhaust systems, making it a versatile choice for street, strip, or show.
Flowmaster 42583 80 Series Muffler - 2.50 Offset IN / 2.50 Dual OUT - Aggressive Sound

Country	USA
Brand	Flowmaster
Manufacturer	Flowmaster
Binding	Automotive
ItemPartNumber	42583
Model	42583
Warranty	Check with the manufacturer
Color	Black
Size	No Size
UnitCount	1
UPCs	700042010363
EANs	0700042010363
ReleaseDate	0000-00-00

Flowmaster 80 Series Chambered Muffler – 2.5” - Offset In/Dual Out – Aggressive Sound – Aluminized Steel – Performance Exhaust for F-Body Vehicles (Camaro, Firebird, Trans Am) - Muscle Cars, 42583

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