Skip to product information
1 of 4


Flowmaster 817585 67-74 MOPAR A-BODY 2.50 AMT 409S

Regular price $1,421.57 CAD
Regular price Sale price $1,421.57 CAD
Shipping calculated at checkout.
American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/80 Series™ Crossflow Muffler;
For the person who is looking for a complete Header-back dual exhaust system with a performance sound. This system is mandrel bent for maximum performance and includes specially selected mufflers. American Thunder 2.5 in. systems generally deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modification. 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 16ga 409 Stainless Tubing
  • Premium Flowmaster Quality
  • Delta Flow Technology
  • Improved HP
  • TQ and Engine Efficiency
  • Limited Lifetime Warranty
  • Aggressive And Powerful Exterior Exhaust Tone
  • Incl. Hangers and Hardware For Easy Installation
  • Axle Back System
  • Dual Out Rear Exit
  • Dyno Tuned for Maximum Performance

Application Summary:

Year Make/Model
1968-1974 Dodge Dart
1970-1974 Plymouth Duster
1967-1974 Plymouth Valiant