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#378817515
Flowmaster 817515 Outlaw Cat-Back Exhaust System
$828.95
/kit
Factory Shipped
$921.95
Save $93.00
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Product Summary
Cat-Back Exhaust System Type, Dual Single or Dual
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See rebate detailsKey Specs
| MFG. Part # | 817515 |
| Exhaust System Type | Cat-Back |
| Single or Dual | Dual |
| Exhaust Tubing Diameter | 2-1/2 Inch |
| Exhaust System Kit Type | Direct Fit |
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Flowmaster 817515 Details
This Flowmaster® Outlaw® Cat-back exhaust system is designed for 2005-2010 Ford Mustang GT 4.6L, and GT500 with 5.4L engine and is perfect for the person looking for a deep aggressive sound level both inside and outside the car. This bolt-on emissions-legal system features 2.50-inch mandrel-bent stainless steel tubing leading into a pair of our race-proven Outlaw Series mufflers with large 3.00-inch outlets for maximum performance. The system uses the factory hanger locations for easy installation and is finished off with a pair of large 4.00-inch polished stainless steel tips embossed with the Flowmaster logo. This exhaust system fits both coupes and convertibles and is covered by our Lifetime Limited Warranty. Includes all necessary parts, hardware and easy to follow instructions for an installation you can do at home. Note: Fits coupes and convertibles.
Features:
Application
2005-2010 Ford Mustang 4.6L V8
Rebates
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Save 10% instantly on select products across the Holley family of performance brands during the annual Holley I.R.S.Tax Sale. Instant rebate period has been extended and now runs from February 17, 2026 through April 19, 2026.
Guides & Documents
Flowmaster 817515 Specifications
Flowmaster 817515 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 817515 |
| Brand | Flowmaster |
| Exhaust System Type | Cat-Back |
| Single or Dual | Dual |
| Exhaust Tubing Diameter | 2-1/2 Inch |
| Exhaust System Kit Type | Direct Fit |
| GENERAL | |
| Exhaust Exit | Dual Split Rear |
| Sound Level | Aggressive |
| Muffler(s) Included | Yes |
| Muffler Quantity | 2 |
| Muffler Connections | Single Inlet | Single Outlet |
| Muffler Type | Welded Baffle |
| Exhaust Tip Included | Yes |
| Exhaust Tip Quantity | 2 |
| Exhaust Tip Shape | Round |
| Exhaust Tip Cut | Angle |
| Exhaust Tip Edge Style | Rolled Edge | Double-Wall |
| Exhaust Tip Size | 4.00" |
| Exhaust Tip Length | 5.25" |
| Exhaust System Material | 409S Stainless Steel |
| Exhaust System Finish | Natural |
| Exhaust Pipe Color | Natural | Black |
| Muffler Series | Outlaw |
| Muffler Inlet Diameter | 2.5" |
| Muffler Outlet Diameter | 3" |
| Muffler Material | 409 Stainless Steel |
| Muffler Color | Black |
| Exhaust Tip Material | 304 Stainless Steel |
| Exhaust Tip Finish | Polished |
| Exhaust Tip Color | Natural |
| Mount Type | Uses Factory Hangers |
| Inlet Quantity | Dual |
| Tailpipe Diameter | 3" |
| Catalytic Converter(s) Included | No |
| Hardware Included | Yes |
| Heat Shield | No |
| Sold in Quantity | Kit |
| GTIN Code | 700042032525 |
| Material Type | Stainless Steel |
| Exit Location | Rear |