Flowmaster · New
Flowmaster 05-10 Mustang 3in. American Thunder SS Cat-Back Exhaust System
MPN 817494 · Store SKU flo817494
Supplier stock checked 11/8/2026, 6:58:12 AM UTC. Adding a part does not reserve it.
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Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
For the serious enthusiast who is looking for all the performance benefits of a complete Cat-back dual exhaust system, this is it. As an American Thunder system, it delivers an aggressive exterior sound level and a moderate interior tone that is suited to the enthusiast who wants to be heard. With maximum performance and easy fit in mind, the system is mandrel bent and includes specially engineered mufflers featuring Delta Flow technology. A Scavenger Series X-pipe is used to maximize exhaust pulse velocity for better torque and helps keep that classic muscle car tone. Maximum increases of 17 hp and 19 ft-lb. torque at the rear wheels. 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 a simple installation. Fits 2005-2010 Ford Mustang GT, GT500, California Special or convertible with 4.6L or 5.4L engine. 3.00-inch mandrel bent pipes with Scavenger Series X-pipe. - Aggressive sound Flowmaster American Thunder Cat-back Exhaust System
Manufacturer fitment & guides
Check 817494 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
