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In 1983, Flowmaster founder Ray Flugger created Flowmaster's first patented design of racing muffler.

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Items 1-25 of 149
Description: Exhaust System, American Thunder, Cat-Back, 3 in Tailpipe, 4 in Tips, Stainless, Black / Natural, Ford Mustang 2015-21, Kit
Item #: FLO817750
Condition: New
Limited Supply: Only 0 Left!
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This item has an additional $9.95 shipping charge due to its large size and/or weight. Ships direct from manufacturer.
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Price: $1,105.00
Sale: $993.95
Save: 10%
Save: $111.05

Description: Exhaust System, Outlaw, Cat-Back, 3 in Tailpipe, 3 in Tips, Stainless, Natural, Mopar LD-Body 2017-21, Kit
Item #: FLO817779
Condition: New
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Price: $1,824.00
Sale: $1,640.95
Save: 10%
Save: $183.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 4 in Tips, Stainless, Natural, Chevy Camaro 2010-15, Kit
Item #: FLO817483
Condition: New
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Price: $989.00
Sale: $889.95
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Save: $99.05


Description: Exhaust System, American Thunder, Cat-Back, 3 in Tailpipe, 4 in Tips, Stainless, Natural, Ford Mustang 2005-10, Kit
Item #: FLO817494
Condition: New
Ships direct from manufacturer.
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Price: $1,380.00
Sale: $1,241.95
Save: 10%
Save: $138.05


Description: Exhaust System, American Thunder, Cat-Back, 3 in Tailpipe, Rectangle Tips, Stainless, Natural, Mopar LC-Body 2008-13, Kit
Item #: FLO817499
Condition: New
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Price: $1,208.00
Sale: $1,086.95
Save: 10%
Save: $121.05


Description: Exhaust System, American Thunder, Cat-Back, 3 in Diameter, Dual Rear / Side Exit, 3-1/2 in Polished Tips, Stainless, Natural, Ford Fullsize Truck 2021-22, Kit
Item #: FLO817979
Condition: New
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Price: $1,024.00
Sale: $920.95
Save: 10%
Save: $103.05


Description: Exhaust System, American Thunder, Cat-Back, 3 in Diameter, Dual Side Exit, 4 in Polished Tips, Stainless, Natural, 6.6 L, GM Fullsize Truck 2020-21, Kit
Item #: FLO817933
Condition: New
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Price: $1,082.00
Sale: $972.95
Save: 10%
Save: $109.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Stainless, Natural, Ford Mustang 1986-93, Kit
Item #: FLO817213
Condition: New
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Price: $828.00
Sale: $744.95
Save: 10%
Save: $83.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Steel, Aluminized, Ford Mustang 1986-93, Kit
Item #: FLO17213
Condition: New
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Price: $707.00
Sale: $635.95
Save: 10%
Save: $71.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, Steel, Aluminized, LX, Ford Mustang 1986-93, Kit
Item #: FLO17113
Condition: New
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Price: $697.00
Sale: $626.95
Save: 10%
Save: $70.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, Stainless, Natural, GT, Ford Mustang 1986-93, Kit
Item #: FLO817116
Condition: New
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Price: $885.00
Sale: $795.95
Save: 10%
Save: $89.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, Steel, Aluminized, GT, Ford Mustang 1986-93, Kit
Item #: FLO17116
Condition: New
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Price: $702.00
Sale: $630.95
Save: 10%
Save: $71.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, Steel, Aluminized, Ford Mustang 1994-97, Kit
Item #: FLO17112
Condition: New
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Price: $645.00
Sale: $579.95
Save: 10%
Save: $65.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Steel, Aluminized, Ford Mustang 1994-97, Kit
Item #: FLO17212
Condition: New
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Price: $732.00
Sale: $657.95
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Save: $74.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Steel, Aluminized, Ford Mustang 1998, Kit
Item #: FLO17215
Condition: New
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Price: $805.00
Sale: $723.95
Save: 10%
Save: $81.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, Cobra, Ford Mustang 1999-2004, Kit
Item #: FLO17248
Condition: New
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Price: $858.00
Sale: $771.95
Save: 10%
Save: $86.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, Ford Mustang 1999-2004, Kit
Item #: FLO17312
Condition: New
Limited Supply: Only 6 Left!
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Price: $719.00
Sale: $646.95
Save: 10%
Save: $72.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Stainless, Natural, Ford Mustang 1999-2004, Kit
Item #: FLO817312
Condition: New
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Price: $1,013.00
Sale: $910.95
Save: 10%
Save: $102.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 4 in Tips, Stainless, Natural, Mopar LX-Body 2005-10, Kit
Item #: FLO817480
Condition: New
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Price: $1,082.00
Sale: $972.95
Save: 10%
Save: $109.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, Stainless, Natural, Mopar LC-Body 2009-13, Kit
Item #: FLO817479
Condition: New
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Price: $1,174.00
Sale: $1,055.95
Save: 10%
Save: $118.05


Description: Exhaust System, American Thunder, Cat-Back, 3 in Tailpipe, 4 in Tips, Stainless, Natural, Chevy Camaro 2010-13, Kit
Item #: FLO817481
Condition: New
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Price: $1,460.00
Sale: $1,313.95
Save: 10%
Save: $146.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Diameter, Dual Rear Exit, Dual 4 in Black Ceramic Tips, Stainless, Natural, 6.2 L, GM Fullsize Truck 2019-21, Kit
Item #: FLO817891
Condition: New
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Price: $1,169.00
Sale: $1,051.95
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Save: $117.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Diameter, Dual Side Exit, 3-1/2 in Polished Tips, Stainless, Natural, 3.6 L, Jeep Gladiator 2020-21, Kit
Item #: FLO817913
Condition: New
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Price: $933.00
Sale: $838.95
Save: 10%
Save: $94.05


Description: Exhaust System, American Thunder, Cat-Back, 3 in Diameter, Dual rear Exit, Dual 4 in Black Ceramic Tips, Stainless, Natural, 5.3 L, GM Fullsize Truck 2019-21, Kit
Item #: FLO817895
Condition: New
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Price: $1,146.00
Sale: $1,030.95
Save: 10%
Save: $115.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Stainless, Natural, Mopar LD-Body 2015, Kit
Item #: FLO817658
Condition: New
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Price: $1,105.00
Sale: $993.95
Save: 10%
Save: $111.05


Items 1-25 of 149

More About Flowmaster

Pit Stop USA is The Online Motorsports Superstore! We feature Flowmaster Mufflers, Flowmaster Racing Mufflers and Flowmaster Exhaust Systems. In 1983 California Sprint Car racers were experiencing 'excessive sound' issues and were told to quiet the cars down or stop racing. Flowmaster founder Ray Flugger created Flowmaster's first patented design of racing mufflers. Ray attached handles to ease carrying the race mufflers, and the mufflers became known as the "suitcase muffler. Today Flowmaster is dedicated to building the highest quality U.S. made exhaust products available. The aFlowmaster Sounda is the true tone of American muscle and performance. What makes Flowmaster so unique is that its performance improvement is paired with its unique exhaust tones. The aFlowmaster Sounda is offered in many different tones depending upon the muffler series. From the deep, aggressive tone of the Super 44 a" to the quiet and subtle, but unmistakably rich Flowmaster tone of the 70 Seriesa", Flowmasters family of mufflers offer the right application of performance and sound you want. Flowmaster operates the only exhaust Research & Design facilities of its kind in the world and also utilizes Spectrum Analyzers to fine "tune" the sound of each series of mufflers, both for peak performance and just the right sound levels and tones. Flowmaster offers you the choice of sound to fit your sound preference from "wild to mild" and of your specific vehicle needs. We feature Flowmaster Delta-Force Race Mufflers, Flowmaster Scavenger Series Race Mufflers, Flowmaster Scavenger Collectors, Flowmaster Low Profile Mufflers, Flowmaster Delta Flow Stainless Steel Mufflers, Flowmaster American Thunder Exhaust Systems, Flowmaster Force II Exhaust Systems, Flowmaster 40 Series Delta Flow Mufflers, Flowmaster 40 Series Mufflers, Flowmaster Super 40 Series Mufflers, Flowmaster 50 Series Delta Flow Mufflers, Flowmaster Stainless Steel Mufflers and more at low everyday prices!