Flowmaster · New
Flowmaster 05-10 Mustang GT 4.6L Outlaw SS Axle-Back Exhaust System
MPN 817511 · Store SKU flo817511
Supplier stock checked 11/8/2026, 7:41:17 AM UTC. Adding a part does not reserve it.
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Product details
Flowmaster's Outlaw Axle-back systems are race-oriented systems designed to replace original rear mounted mufflers located behind the rear axle using factory style connections. Outlaw systems deliver an ultra aggressive interior and exterior tone and are suited to the enthusiast who wants the most aggressive components they can purchase. 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 relatively quick and easy installation. Fits 2005-2010 Ford Mustang GT, GT500 with a 4.6L or 5.4L engine. - Aggressive sound Flowmaster Outlaw Axle-back Exhaust System
Manufacturer fitment & guides
Check 817511 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y