Flowmaster 817571 Header-back System 409S - Dual Side Exit - American Thunder®-Moderate/Aggressive
For the person looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, Flowmaster's American Thunder system for GM F-Body cars include specially-selected 50 series slim-line mufflers to make your Camaro or Firebird come alive. This Header-back dual exhaust system uses 2.50 in. 409S stainless steel tubing (backed by our lifetime limited warranty!) and a durable H-pipe design that delivers improved throttle response, power and mileage. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
Note 1: Off Road racing use only - not legal for use on catalyst equipped vehicles.
Note 2: Requires double hump crosspipe.
Note 3: Requires fabrication and/or welding to adapt system to manifolds or headers.
Features:
- Stainless steel construction
- Dyno tuned for maximum performance
- Patented Delta Flow technology
- Lifetime limited warranty
- Premium Flowmaster quality
Product Specification:
- 2WD/4WD: 2WD
- Exhaust series: American Thunder®
- Exit Position: Dual Side Exit
- Heat shield: None
- Inlet diameter (inches): 2.50
- Material: Stainless Steel
- Muffler quantity: 2
- Muffler series: 50 Series (slim line)
- Outlet diameter (inches): 2.50
- Sound level: Moderate/Aggressive Sound
- System type: Header-back System
- Tubing diameter (inches): 2.50
Fitments:
- 1976-1980 Chevrolet Camaro Base V8, 5.0L
- 1980 Chevrolet Camaro Base V8, 4.4L
- 1975 Chevrolet Camaro Base V8, 5.7L
- 1975-1980 Chevrolet Camaro Base V8, 5.7L
- 1979-1981 Chevrolet Camaro Berlinetta V8, 5.0L
- 1979-1981 Chevrolet Camaro Berlinetta V8, 5.7L
- 1980-1981 Chevrolet Camaro Berlinetta V8, 4.4L
- 1975 Chevrolet Camaro LT V8, 5.7L
- 1975-1978 Chevrolet Camaro LT V8, 5.7L
- 1976-1978 Chevrolet Camaro LT V8, 5.0L
- 1976-1978 Chevrolet Camaro LT Rally Sport V8, 5.0L
- 1976-1978 Chevrolet Camaro LT Rally Sport V8, 5.7L
- 1976-1980 Chevrolet Camaro Rally Sport V8, 5.7L
- 1976-1980 Chevrolet Camaro Rally Sport V8, 5.0L
- 1980 Chevrolet Camaro Rally Sport V8, 4.4L
- 1975 Chevrolet Camaro RS V8, 5.7L
- 1975 Chevrolet Camaro RS V8, 5.7L
- 1981 Chevrolet Camaro Sport V8, 5.0L
- 1981 Chevrolet Camaro Sport V8, 5.7L
- 1981 Chevrolet Camaro Sport V8, 4.4L
- 1977-1981 Chevrolet Camaro Z28 V8, 5.7L
- 1979-1981 Chevrolet Camaro Z28 V8, 5.0L
- 1975-1977 Pontiac Firebird Base V8, 5.7L
- 1977 Pontiac Firebird Base V8, 6.6L
- 1977-1981 Pontiac Firebird Base V8, 4.9L
- 1977-1980 Pontiac Firebird Base V8, 5.0L
- 1977 Pontiac Firebird Base V8, 5.7L
- 1978-1979 Pontiac Firebird Base V8, 5.7L
- 1981 Pontiac Firebird Base V8, 4.3L
- 1975-1977 Pontiac Firebird Base V8, 6.6L
- 1977 Pontiac Firebird Esprit V8, 5.7L
- 1978-1979 Pontiac Firebird Esprit V8, 5.7L
- 1981 Pontiac Firebird Esprit V8, 4.3L
- 1975-1977 Pontiac Firebird Esprit V8, 5.7L
- 1976 Pontiac Firebird Esprit V8, 6.6L
- 1977-1981 Pontiac Firebird Esprit V8, 4.9L
- 1977-1980 Pontiac Firebird Esprit V8, 5.0L
- 1981 Pontiac Firebird Formula V8, 4.3L
- 1975-1979 Pontiac Firebird Formula V8, 6.6L
- 1975-1977 Pontiac Firebird Formula V8, 5.7L
- 1977-1979 Pontiac Firebird Formula V8, 6.6L
- 1977-1981 Pontiac Firebird Formula V8, 4.9L
- 1977-1981 Pontiac Firebird Formula V8, 5.0L
- 1977 Pontiac Firebird Formula V8, 5.7L
- 1978-1979 Pontiac Firebird Formula V8, 5.7L
- 1975-1979 Pontiac Firebird Trans Am V8, 6.6L
- 1975-1976 Pontiac Firebird Trans Am V8, 7.5L
- 1975 Pontiac Firebird Trans Am V8, 5.7L
- 1977-1979 Pontiac Firebird Trans Am V8, 6.6L
- 1979-1981 Pontiac Firebird Trans Am V8, 4.9L
- 1980-1981 Pontiac Firebird Trans Am V8, 5.0L
Note: 1975 to 1981 GM F-Body with a 4.4L, 4.9L, 5.0L, 5.7L, 6.6L, or 7.5L engine, for Off Road Use Only, includes Camaro and Firebird.
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