Sale

Exhaust Exhaust Pipes, Systems and Components

Flowmaster

American Thunder Crossmember-Back Exhaust System 1967-1970 Ford Mustang With V8 Engine, 2.5 Inch 409 Stainless Steel Pipes Aggressive To Moderate Sound Flowmaster

$1,153.95 $1,065.95 Save $88.00

SKU: F00L 817282

In Stock
In Stock
Ships by Sep 14
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

True dual crossmember-back exhaust system with a moderate to aggressive exhaust tone. Constructed from 16-gauge mandrel-bent stainless steel tubing with a built-in H-pipe crossover and two Super 44 Series mufflers. Includes hangers and hardware. Tailpipes exit under the rear valance with a turn-down. Improves throttle response, power, and mileage. Lifetime Limited Warranty.
Show original supplier description

Part #: 817282

For the person who is looking for a true dual Crossmember-Back exhaust system with an moderate to aggressive exhaust tone. With an easy fit in mind, these systems are constructed from 16-gauge mandrel-bent stainless steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series mufflers and includes all hangers and hardware necessary for installation.The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. The tailpipes in this system exit under the rear valance with a turn-down in the tailpipes. Like all Flowmaster exhaust systems, the benefits include improved throttle response, power and mileage. If you prefer aluminized steel construction, check out optional system# 17282.H-pipe Crossover for Maximum Power and Deep ToneSuper 44 Series Mufflers for Deep Powerful SoundIncludes Hangers and Hardware for InstallationMandrel-bent 16-gauge Stainless Steel TubingModerate to Aggressive Exterior Exhaust ToneCrossmember-Back True Dual Exhaust SystemDoes Not Include Header Reducers or Downpipes for Factory ManifoldsLifetime Limited Warranty

Features:

  • H-pipe Crossover for Maximum Power and Deep Tone
  • Mandrel Bent 16 Gauge 409 Stainless Tubing
  • Super 44 Series Mufflers for Deep Powerful Sound
  • Limited Lifetime Warranty
  • Includes Hangers and Hardware for Installation
  • Aggressive And Powerful Exterior Exhaust Tone
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Incl. Hangers and Hardware For Easy Installation
  • Moderate to Aggressive Exterior Exhaust Tone
  • Header Back System
  • Crossmember-back True Dual Exhaust System
  • Dual Out Rear Exit
  • Does Not Include Header Reducers or Downpipes for Factory Manifolds
  • Dyno Tuned for Maximum Performance
  • Lifetime Limited Warranty
  • Premium Flowmaster Quality

American Thunder Header Back Exhaust System | Dual | Dual Rear Exit | Incl. 2.5 in. Tubing From Trans X-Member Back/H-Pipe/Hardware/Super 44 Series (TM) Mufflers

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFlowmaster
Part NumberF00L 817282

Videos

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy