Special Offers

Flowmaster proudly introduces our newest Cat-back exhaust system for the 2011-2012 Mustang GT. Part number 817560 is a 409S stainless steel Outlaw system for the 5.0L cars. Featuring our patented Scavenger X pipe for increased mid-range torque and mandrel-bent pipes throughout, the system is a full 3.00" diameter. Designed for the hard core enthusiast, the Outlaw Series mufflers deliver a very agg..

Flowmaster's race-oriented Outlaw Cat-back systems are designed to mount behind the factory catalytic converters for 50 state emissions legality. These systems are mandrel bent for maximum performance and include specially selected mufflers. Outlaw systems deliver a super aggressive interior and exterior tone and are suited to the enthusiast who wants the most aggressive components they can purch..

For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides, SOS (Single out side) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power..

Flowmaster's race-oriented American Thunder Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most OEM style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions.These systems are mandrel bent for ..

American Thunder exhaust systems deliver the aggressive sounds you want, as well as the performance gains you demand. This T409 stainless steel American Thunder Axle-back for the 2013 to 2014 Mustang GT features specially modified Super 44 series mufflers with polished 4.00 in. stainless tips and is a direct bolt on for the restyled Mustang. A lifetime limited warranty provides assurance that this..

The Outlaw Cat-back exhaust systems feature race bred Outlaw mufflers for a very aggressive track oriented sound inside the car and out. Featuring 3.00 in. mandrel bent piping, this Outlaw system bolts directly behind the OE cats with our Scavenger X pipe assembly and delivers noticeable increases in horsepower and torque, while maintaining 50 state emissions legality. The 4.00 in. polished stainl..

Outlaw exhaust systems feature the race developed and proven Outlaw mufflers for a very aggressive sound outside the vehicle with a moderate interior sound level. As an Axle-back exhaust, this direct bolt on Outlaw system is easily installed at home and will add the performance improvements you expect from Flowmaster. The 4.00 in. polished stainless tips provide a performance look, while a lifetim..

Flowmaster's American Thunder cat-back exhaust system for the 2013-2018 Ford Focus ST hatchback is perfect for the person looking for moderate to aggressive sound levels with all of the performance benefits that you would expect from Flowmaster. This bolt on DOR (Dual Out Rear) emissions legal system for the 2.0L L4 turbocharged engine features a specially tuned muffler and resonator, 2.25 inch ma..

Flowmaster's American Thunder cat-back exhaust system for the 1998-2003 Ford F-150 pickup truck is perfect for the person looking for an aggressive sound level with all of the performance benefits that you would expect from Flowmaster. This DOR/DOS (Dual Out Rear, Dual Out Side) bolt on 409S stainless steel system for the 4.6L and 5.4L V8 engines features dual 2.50" tailpipes and 3.50" polished st..

Flowmaster's race-oriented Outlaw Extreme Cat-back system is designed for the enthusiast looking for the maximum sound level and performance from their 1986 to 2004 V8 Mustang. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. This mandrel bent system..

Flowmaster's Outlaw Series Cat-back exhaust system for the 2009-2014 Ford F-150 truck is perfect for the person looking for maximum sound levels both inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear or Dual Out Side) emissions-legal system for trucks with the 4.6L, 5.0L and 5.4L V8 engines feature a s..

Flowmaster's Outlaw Cat-back exhaust system for the 2004-2008 Ford F-150 truck is perfect for the person looking for maximum sound levels both inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear or Dual Out Side) emissions-legal system for trucks with the 4.6L and 5.4L V8 engine features a stainless stee..

Flowmaster's American Thunder Cat-back exhaust system for the 2014 - 2018 Ram 2500 truck is perfect for the person looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear/ Dual Out Side) emissions-legal system for the Crew Cab Long Bed/Standard Bed models with a 5.7L V8 on..

Flowmaster's Force II Cat-back exhaust system for 2014-2016 Ford F-250/F-350 Super Duty trucks is perfect for the person looking for mild to moderate sound levels with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear or Dual Out Side) emissions-legal system for the 6.2L V8 (gas) engine features a 50 Series HD muffler and dual mandrel bent 3..

Flowmaster introduces their new Outlaw Extreme Cat-back system for the 2009 to 2014 Ford F-150 trucks with the 4.6L, 5.0L and 5.4L V8 engines. These kits deliver the ultimate sound in aggressive exhaust systems by using a 3.0 inch Outlaw muffler and a single 3.0 inch dump style turndown exit (no tailpipes). As an Outlaw Extreme system this will deliver a very aggressive sound and tone both outsi..

Flowmaster's American Thunder Cat-back exhaust system for the 2014 through 2018 Ram 2500 truck is perfect for the person looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear/ Dual Out Side) emissions-legal system, for the Crew Cab Long Bed/Standard Bed and Mega Cab mod..

Flowmaster's American Thunder Cat-back exhaust system for the 2015-2018 Ford F150 is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system for the 2.7L, 3.5L V6 and 5.0L V8 engines features 3.00" mandrel bent tubing that fl..

Flowmaster's Outlaw Cat-back exhaust system for the 2015-2018 Ford F-150 is perfect for the person looking for a very deep and aggressive sound level outside and inside the truck with all of the performance benefits that you would expect from Flowmaster. This exhaust is not for the faint of heart! This bolt-on DOR/DOS (Dual Out Rear, Dual Out Side) emissions-legal system for trucks with the 2.7..

Flowmaster's Force II Cat-back exhaust system for the 2015-2018 Ford F-150 is perfect for the person looking for a mild exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system for the 2.7L, 3.5L EcoBoost V6, 3.5L TiVCT V6 and 5.0L V8 engines features 3.00in mandrel bent tu..

2015 - 2017 Ford Mustang GT, 5.0L, V8, Fastback/Hardtop Only, Cat-back, 3.00" Mandrel Bent Tubing, Dual System, 60 Series Mufflers, 4.00" Polished Tips, American Thunder, DOR, 409S Stainless Steel.Features:Flowmaster ReliabilityPatented Delta Flow TechnologyDyno Tuned For Maximum PerformanceStainless Steel Construction2WD/4WDRWDBrandFlowmasterCalifornia Proposition 65 Chemical NameChromium (hexava..