2005-2009 Ford Mustang Axle-back Exhaust System Flowmaster American Thunder 17421
2005-2009 Ford Mustang Axle-back Exhaust System Flowmaster American Thunder 17421
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Material:
Overview
This American Thunder axle-back exhaust system is constructed from 16-gauge mandrel-bent aluminized steel and includes a pair of specially designed 60 Series™ performance muffler with the sound that goes hand in hand with the performance image of the Mustang. The muffler is finished off with large 4.00-inch polished stainless steel tips to fill out the exhaust cutouts in the rear valance for a muscular appearance that matches the sound. As an American Thunder® system, it delivers a moderate interior tone and exterior sound that is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster® exhaust systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, the system includes all necessary parts and hardware for easy installation. Note: Fits both coupes and convertibles.
Features
- Mandrel bent 16 Gauge Tubing
- Aggressive Sound exterior exhaust tone
- Includes hangers and hardware for easy installation
- Dyno tuned for maximum performance
Application
- Fits 2005-2009 Ford Mustang with V6 engine, coupes and convertible models.
Specs
2WD/4WD | 2WD |
Brand | Flowmaster |
California Proposition 65 Chemical Name | Chromium (hexavalent compounds) |
California Proposition 65 Chemical Name | Nickel (Metallic) |
California Proposition 65 Required | Yes |
Color | Black |
Emission Code | 5 |
Exhaust Series | American Thunder |
Exit Position | Single Rear Exit |
Heat Shield | No |
Inlet Diameter (in) | 2.5 |
Material | Aluminized Steel |
Muffler Part Number | Kit Only |
Muffler Quantity | 1 |
Muffler Series | 60 Series Delta Flow |
Outlet Diameter (in) | 2.5 |
Product Type | Exhaust System |
Single Dual | Single |
Sound Level | Moderate |
System Type | Axle-back |
Tip Diameter (in) | 3.5 |
Tip Quantity | 1 |
Tubing Diameter (in) | 2.5 |
Warning | California Proposition 65 |


Policies and FAQs
Return Policy
Fault reasons include but are not limited to:
- Buyer was shipped the wrong product
- Buyer was shipped a damaged product
- The product page had incorrect fitment and the part does not fit the Buyer's vehicle
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
FAQs
|Q. What is an Intermediate Brake Line?
|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.
|Q. What is included in a pre bent brake line kit?
|A. Our kits include all of the solid metal lines for that section of the vehicle
|Q. I need to return something - what's your return policy?
|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.
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Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
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If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.