OVERSIZE 1Flowtech Performance Exhaust was founded in 1994, by exhaust market expert Gary Biggs, with the mission of delivering high quality performance exhaust at a great value. The mission was successful and in less than two decades Flowtech became the leader in value priced exhaust systems.
Flowtech cornered its place in the market with aggressive and memorable product names such as Raptor™, Terminator™, Afterburner™ and Warlock™. Flowtech even revived some names from back in the day like Purple Hornies™.
Flowtech made its mark with simple yet effective improvements like slotted port flanges giving added wiggle room during header installation. They dimpled their tubes at the port to make more room for the header bolts and they parallel ground their flanges to assure a tight seal. Flowtech innovations include their unique Afterburner headers which separated the odd firing cylinders with a velocity tube to improve scavenging. Their patented Warlock bypass muffler won the SEMA best new product award for its revolutionary open or closed design in 1996.
When Flowtech became part of Holley Performance Products in 1999, the company continued to focus on value, with an emphasis on late model cars and trucks. Headers and exhaust systems were developed for Mustangs, Camaros, and all types of full size trucks - including diesels. The same innovation continues today with the addition of universal X-pipe kits and X-pipe kits with built in cut-outs. Continuous product updates and improvements to manufacturing processes will keep Flowtech the leader in value priced exhaust systems. We hope you enjoy your Flowtech product as much as we enjoy building it!
| Download Name | File Size |
| 12136-7flt.pdf | 249.67KB |
| Make | Model | Submodel | Years | Engine | Fitment Notes |
| Ford | Mustang | GT | 2005 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | GT | 2006 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | GT | 2007 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | GT | 2008 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | GT | 2009 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | GT | 2010 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant Fits 2010 Mustang But Due To The Rear Valance Tips Stick Out Further |
| Ford | Mustang | Shelby GT500KR | 2008 | 5.4L / 330 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | Shelby GT500KR | 2009 | 5.4L / 330 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | Shelby GT500 | 2007 | 5.4L / 330 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | Shelby GT500 | 2008 | 5.4L / 330 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | Shelby GT500 | 2009 | 5.4L / 330 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | Shelby GT500 | 2010 | 5.4L / 330 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant Fits 2010 Mustang But Due To The Rear Valance Tips Stick Out Further |
| Ford | Mustang | Shelby GT | 2007 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Ford | Mustang | Shelby GT | 2008 | 4.6L / 281 / V8 | 2.5 in. Tubing; 409 Stainless Steel; Dual Rear Exit; Incl. Drivers-Pass. Side Dual Mufflers/Hardware/Dual 4 in. Polished Stainless Steel Tip;50 State Legal / California Emissions Compliant |
| Application | 2005-2010 Mustang 4.6/5.4L |
| Emission Code | 5 |
| Exhaust Series | Flowtech |
| Exhaust Type | Dual |
| Exit Position | Dual Rear |
| Exit Style | Straight |
| Inlet Inside Diameter | 2.500 in. |
| Material | 409 Stainless Steel |
| Muffler Type | High Flow Straight Through |
| Outlet Outside Diameter | 2.500 in. |
| Part Type | Exhaust System Kit |
| Sound Level | Aggressive |
| System Type | Axle Back |
| Tail Pipe Diameter | 2.500 in. |
| Tip Diameter | 4.000 in. |
| Tubing Diameter | 2.500 in. |
| Tubing Diameter (in) | 2.5 |
| WARNING CA Proposition 65 | WARNING: Cancer and Reproductive Harm |
