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  • Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
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Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
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Load image into Gallery viewer, Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
Load image into Gallery viewer, Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
Load image into Gallery viewer, Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
Load image into Gallery viewer, Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
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Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248

Exhaust, Mufflers & Tips Catback
Flowmaster
flo17248
Special order
September 23, 2026
Not CARB compliant. Not legal for sale or use in California on emissions-controlled vehicles.
$852.11 $1,068.95
For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. This dual out American Thunder cat-back exhaust system is the perfect choice with a 2.50-inch flanged pipe connecting directly to the catalytic converters, the mandrel-bent aluminized steel inlet tubes flow into a large case Super 40 Series performance mufflers for a deep powerful sound. The system uses the factory hanger locations for an easy installation and features dual 2.50-inch mandrel-bent tailpipes exiting out the back and are finished off with dual 3.00-inch polished stainless steel tips for a muscular look and sound. American Thunder systems deliver a moderate to aggressive exterior tone with a mild-moderate interior tone and are best suited for the enthusiast who wants their performance to be heard. 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. Comes with our 3-year Limited Warranty. If you prefer a full stainless steel exhaust system with a Lifetime Limited Warranty, check out system #817248. Fits 1999-2004 Ford Mustang Cobra with 4.6L DOHC engine. Features & Benefits...
Flowmaster 91-95 Jeep Wrangler YJ 4.0L Force II SOR Cat-Back Exhaust System - 17272
Flowmaster 91-95 Jeep Wrangler YJ 4.0L Force II SOR Cat-Back Exhaust System - 17272
$658.95 $524.70
Flowmaster 86-91 Chevrolet Camaro/Pontiac Firebird 2.5in. American Thunder Cat-Back Exhaust System - 17234
Flowmaster 86-91 Chevrolet Camaro/Pontiac Firebird 2.5in. American Thunder Cat-Back Exhaust System - 17234
$818.95 $652.98
Flowmaster 99-04 Mustang Cobra 4.6L DOHC American Thunder Cat-Back Exhaust System - 17248
SKU: flo17248
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. This dual out American Thunder cat-back exhaust system is the perfect choice with a 2.50-inch flanged pipe connecting directly to the catalytic converters, the mandrel-bent aluminized steel inlet tubes flow into a large case Super 40 Series performance mufflers for a deep powerful sound. The system uses the factory hanger locations for an easy installation and features dual 2.50-inch mandrel-bent tailpipes exiting out the back and are finished off with dual 3.00-inch polished stainless steel tips for a muscular look and sound. American Thunder systems deliver a moderate to aggressive exterior tone with a mild-moderate interior tone and are best suited for the enthusiast who wants their performance to be heard. 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. Comes with our 3-year Limited Warranty. If you prefer a full stainless steel exhaust system with a Lifetime Limited Warranty, check out system #817248.

Fits 1999-2004 Ford Mustang Cobra with 4.6L DOHC engine.

Features & Benefits

  • Includes Hangers and Hardware for an Easy Installation
  • Includes 3.00-inch Polished Stainless Steel Tips
  • Mandrel-bent 16-gauge Aluminized Steel Tubing
  • Covered by our 3-year Limited Warranty
  • Super 40 Series Performance Mufflers
  • Over 35+years of Flowmaster Quality
  • Dyno Tuned for Maximum Performance
  • Uses the Factory Hanger Locations
  • Moderate Exterior Exhaust Tone
  • Quick and Easy Installation
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To start the return process, please e-mail sales@allianceracing.com

Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

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Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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