Home » Flowmaster Header-back System 409S - Dual Rear Exit-AmeriCan Thunder® - Aggressive Sound - 2-1/2" Tailpipe
Flowmaster

Flowmaster Header-back System 409S - Dual Rear Exit-AmeriCan Thunder® - Aggressive Sound - 2-1/2" Tailpipe

In stock
SKU: FLO817409
Exhaust System, American Thunder, Header-Back, 2-1/2 in Tailpipe, Stainless, Natural, GM A-Body 1968-72, Kit
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$872.06
Sale $1,077.00 $872.06
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Header-back System 409S- Dual Rear Exit - American Thunder(R) - Aggressive Sound

Fits 1968 to 1972 GM A-Body with a V-8 engine.

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. 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.

  • Mandrel bent 16 gauge 409 stainless tubing

    • Vehicle Applications:

  • 1970-1972 Buick GS 455
  • 1968-1972 Pontiac LeMans
  • 1968-1969 Buick GS 350
  • 1968-1972 Pontiac GTO
  • 1968-1972 Buick Skylark
  • 1968-1972 Chevrolet Chevelle
  • 1968-1969 Buick GS 400
  • 1968-1972 Pontiac Grand Prix
  • 1970-1972 Buick GS
  • 1968-1972 Oldsmobile Cutlass
  • 1968-1971 Oldsmobile 442

    • Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV?s, classic muscle cars, powersports vehicles and more. Flowmaster gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive ?laminar-flow? mufflers and a new line of FlowFX straight-through performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

    Fits 1968-1972 GM A-Bodies with V8 engine.

  • Super 40 Series Mufflers for Deep Powerful Sound
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Includes Hangers and Hardware for Installation
  • Aggressive Exterior Exhaust Tone
  • Crossmember-back True Dual Exhaust System
  • Does Not Include Header Reducers or Downpipes for Factory Manifolds
  • Lifetime Limited Warranty

    • Product Description:

  • Exhaust System
  • American Thunder
  • Header-Back
  • 2-1/2 in Tailpipe
  • Stainless
  • Natural
  • GM A-Body 1968-72
  • Kit
    • Manufacturer of performance exhaust systems, mufflers, performance air intakes, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 4 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.