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Custom Exhaust
Duncan's Automotive is proud to be a Flowmaster performance exhaust system dealer. Flowmaster exhaust systems give your vehicle more power than the stock system while delivering the classic "Flowmaster Sound" that is immediately recognized by performance enthusiasts.
Duncan's Automotive installs the complete Flowmaster line from individual performance mufflers to complete exhaust kits including some of the most popular products like:
Performance Mufflers
Standard 40 Series Two Chamber Muffler
This muffler is suitable for street and strip applications and delivers added power and an aggressive, powerful tone.
70 Series Big Block II Three Chamber Muffler
Add performance to your street car, truck and RV. This muffler gives you increased power with a milder sound.
More mufflers at the Flowmaster Web site...
Complete Exhaust Systems
Dual Rear (DOR) and Dual Side (DOS) Exit Exhaust Systems
Add the custom dual exhaust look to vehicles that were factory equipped with a single exhaust system.
True Dual Exhaust Systems
This system routes your vehicle's exhaust through two separate pipes from the header to tail pipe. Using mandrel bent tubing and specially tuned mufflers, this system provides a complete package to add power and that performance sound.
Muscle Truck Exhaust Systems (DOSS)
Want to make your late model truck look like a NASCAR Craftsman Truck Series champ? With their dual stainless steel exhaust tips exiting in front of the back where, the Muscle Truck systems are a great start.