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

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Items 1-25 of 46
Description: Exhaust System, American Thunder, Header-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Steel, Aluminized, GM Fullsize Truck 1973-87, Kit
Item #: FLO17742
Condition: New
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Price: $1,003.00
Sale: $901.95
Save: 10%
Save: $101.05


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: $1,072.00
Sale: $963.95
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Save: $108.05


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: $1,158.00
Sale: $1,041.95
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Save: $116.05


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: $1,135.00
Sale: $1,020.95
Save: 10%
Save: $114.05


Description: Exhaust System, American Thunder, Header-Back, 2-1/2 in Tailpipe, Stainless, Natural, GM Fullsize Truck 1963-66, Kit
Item #: FLO817937
Condition: New
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Price: $907.00
Sale: $815.95
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Save: $91.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3-1/2 in Tips, Stainless, Natural, GM Fullsize Truck 2014-19, Kit
Item #: FLO817669
Condition: New
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Price: $1,128.00
Sale: $1,014.95
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Save: $113.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3-1/2 in Tips, Stainless, Natural, GM Fullsize Truck 2007-14, Kit
Item #: FLO817680
Condition: New
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Price: $1,112.00
Sale: $999.95
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Save: $112.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, Steel, Aluminized, GM Fullsize Truck 1999-2007, Kit
Item #: FLO817428
Condition: New
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Price: $989.00
Sale: $889.95
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Save: $99.05


Description: Exhaust System, American Thunder, Header-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Stainless, Natural, GM Fullsize Truck 1967-72, Kit
Item #: FLO817654
Condition: New
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Price: $957.00
Sale: $860.95
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Save: $96.05


Description: Exhaust System, American Thunder, Header-Back, 2-1/2 in Tailpipe, 2-1/2 in Tips, Steel, Aluminized, GM Fullsize Truck 1967-72, Kit
Item #: FLO17654
Condition: New
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Price: $878.00
Sale: $789.95
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Save: $88.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, GM Fullsize Truck 1999-2006, Kit
Item #: FLO17392
Condition: New
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Price: $692.00
Sale: $621.95
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Save: $70.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, GM Fullsize Truck 1999-2006, Kit
Item #: FLO17395
Condition: New
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Price: $555.00
Sale: $498.95
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Description: Exhaust System, American Thunder, Cat-Back, 3 in Tailpipe, Steel, Aluminized, GM Fullsize SUV 1992-95, Kit
Item #: FLO17162
Condition: New
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Price: $497.00
Sale: $446.95
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Description: Exhaust System, American Thunder, Cat-Back, 3 in Tailpipe, Steel, Aluminized, GM Fullsize Truck 1996-99, Kit
Item #: FLO17287
Condition: New
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Price: $737.00
Sale: $662.95
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Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, GM Fullsize Truck 1996-99, Kit
Item #: FLO17470
Condition: New
Ships direct from manufacturer.
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Price: $828.00
Sale: $744.95
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Save: $83.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, GM Fullsize Truck 1999-2006, Kit
Item #: FLO17428
Condition: New
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Price: $798.00
Sale: $717.95
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Save: $80.05


Description: Exhaust System, American Thunder, Cat-Back, 3-1/2 in Tailpipe, 4 in Tip, Steel, Aluminized, GM Fullsize Truck 2001-07, Kit
Item #: FLO17328
Condition: New
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Price: $714.00
Sale: $641.95
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Save: $72.05


Description: Exhaust System, American Thunder, Turbo-Back, 2-1/2 in Tailpipe, 4 in Tips, Steel, Aluminized, GM Fullsize SUV / Truck 2001-06, Kit
Item #: FLO17342
Condition: New
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Price: $833.00
Sale: $748.95
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Save: $84.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Tailpipe, 3 in Tips, Steel, Aluminized, GM Fullsize Truck 2004-06, Kit
Item #: FLO17436
Condition: New
Limited Supply: Only 4 Left!
Ships direct from manufacturer.
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Price: $878.00
Sale: $789.95
Save: 10%
Save: $88.05


Description: Exhaust System, Outlaw, Cat-Back, 3 in Tailpipe, 3 in Tips, Stainless, Black / Natural, 5.3 L, GM LS-Series, GM Fullsize Truck 2009-13, Kit
Item #: FLO817706
Condition: New
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Price: $456.00
Sale: $409.95
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Description: Exhaust System, FlowFX, Cat-Back, 2-1/2 in Tailpipe, 4-1/2 in Black Ceramic Tips, Stainless, Natural, 5.3 L, Crew / Double Cab, GM Fullsize Truck 2009-13, Kit
Item #: FLO717822
Condition: New
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Price: $929.00
Sale: $835.95
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Description: Exhaust System, Force II, Cat-Back, 3 in Tailpipe, 4 in Tips, Stainless, Natural, GM Fullsize Truck 2011-19, Kit
Item #: FLO817541
Condition: New
Ships direct from manufacturer.
This item has an additional $44.95 shipping charge due to its large size and/or weight.
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Price: $1,200.00
Sale: $1,079.95
Save: 10%
Save: $120.05


Description: Exhaust System, American Thunder, Cat-Back, 2-1/2 in Diameter, 3-1/2 in Tips, Stainless, Polished, GM Fullsize Truck 2011-18, Kit
Item #: FLO817602
Condition: New
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Price: $1,078.00
Sale: $969.95
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Save: $108.05


Description: Exhaust System, FlowFX, Cat-Back, 2-1/2 in Tailpipe, 4 in Tips, Stainless, Natural, GM Fullsize Truck 2014-18, Kit
Item #: FLO717787
Condition: New
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Price: $787.00
Sale: $707.95
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Save: $79.05


Description: Exhaust System, FlowFX, Cat-Back, 2-1/2 in Tailpipe, 4-1/2 in Black Ceramic Tips, Stainless, Natural, 5.3 L, Crew / Double Cab, GM Fullsize Truck 2014-18, Kit
Item #: FLO717869
Condition: New
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Price: $896.00
Sale: $805.95
Save: 10%
Save: $90.05


Items 1-25 of 46

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!