Flowmaster American Thunder Exhaust System

  • Our Price: $159.95 - $1579.95
  • Shipping: FREE SHIPPING
  • Rating:

Popular Related Products

Product Details

  • Enjoy the roars and performance boosts of a Flowmaster American Thunder Exhaust System
  • Chambered muffler increases flow and minimizes drone
  • Simple installation with necessary hardware and instructions provided
  • Improves gas mileage and increases performance gains up to 10%
  • Mandrel-bent pipes offer supreme airflow
  • Aluminized steel protects against rust
  • Stainless steel Flowmaster tip(s) included in most kits
  • Backed by a 3-Year Warranty

When you're out on the road cruising in your sweet ride, you don't just want to be seen. You want to be heard, felt even. The deep reverberations of a powerful exhaust system capture the missing piece of a vehicle's personality. But it's not all talk around here. Lean, mean and ready to leave others in the dust, the Flowmaster American Thunder Exhaust System is everything you need to elevate your ride's personality and boost its performance.

This isn't your average exhaust system. Constructed with corrosive-resistant aluminized steel, the American Thunder Exhaust System does more than just roar. You'll see better gas mileage, airflow and up to 10% in horsepower gains thanks to a chambered muffler and mandrel-bent tubing. Get your vehicle's thunderous vocal muscles exercised while enhancing your performance and catching stares along the way. Your custom-engineered American Thunder Exhaust includes stainless steel tips that'll complete the look, sound and feel of a vehicle that's got something to say.

Select a single or dual-exit exhaust for the preferred location (rear or side). NAPA AUTO PARTS is proud to offer the Flowmaster American Thunder Exhaust System with a 3-Year Warranty.

California Residents: Prop 65 Warning
ATTN State of California Consumers Warning: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Flowmaster American Thunder Exhaust System Customer Reviews


Overall Rating:

4.3 of 5

Average Install Time:

1 - 2 hours
who drives a Jeep Gladiator

Sounds awesome but I have some (may be drone) vibration at 2000 RPM if I suddenly accelerate. If I gradually accelerate its not that bad. Overall its a good addition, looks good, sounds good and literally no vibration or no unpleasant noise at highway... which is good.

Install Time: 1 - 2 hours

who drives a Chevy C/K Pickup

Overall kit fit pretty good after we straightened the pipe tips to connect to the other pipe. The exhaust pipe should fit over the muffler exit not inside of it. A gasket would have been nice in the kit. Drop everything, drive to parts store and find a gasket. Other then that, it looks and sounds pretty good.

Install Time: More than 2 hours