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$20 Off $250 / $40 Off $500 / $80 Off $1,000
Use Promo Code: TREAT

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Flowmaster American Thunder Exhaust Systems

4.36 out of 5 stars 544 Customer Reviews

Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel m
Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car application
Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car applications.

Results 1 - 16 of 16

Exhaust System, American Thunder, Dual, Crossmember Back, Split Rear, 2.5 in. Dia., w/H-Pipe and Mufflers, Steel, Aluminized, GM, A-Body, Kit

Part Number: FLO-17119

4.27 out of 5 stars ( 37 )

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Exhaust System, Force II, Cat-Back, Steel, Aluminized, Polished Tip, Chevy, GMC, Pickup, 6.0, 8.1L

Part Number: FLO-17328

4.39 out of 5 stars ( 18 )

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Exhaust System, American Thunder, Cat-Back, Split Rear/Side Exit, Stainless Steel, Natural, Ford, 4.6, 5.4L

Part Number: FLO-817663

4.0 out of 5 stars ( 6 )

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Exhaust System, American Thunder, Header-back, Steel, Aluminized, H-Pipe, Chevy, Pontiac, Kit

Part Number: FLO-17202

4.63 out of 5 stars ( 8 )

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Exhaust System, American Thunder, Cat-back, Single In/Dual Out, Stainless Steel, Natural, Toyota, 3.5L, Kit

Part Number: FLO-817719

3.67 out of 5 stars ( 3 )

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Exhaust System, American Thunder, Cat-Back, Split Rear/Side, Stainless Steel, Natural, Ford, 2.7, 3.5, 5.0L

Part Number: FLO-817725

4.71 out of 5 stars ( 7 )

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Exhaust System, American Thunder, Cat-back, Single In/Dual Out, Stainless Steel, Natural, Split Rear/Split Side Exit, Chevy, GMC, 6.2L, Kit

Part Number: FLO-817602

3.5 out of 5 stars ( 4 )

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Exhaust System, American Thunder, Cat-back, Stainless Steel, Natural, Toyota, 4.6L, 5.7L, Kit

Part Number: FLO-817664

Not Yet Reviewed

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Exhaust System, American Thunder, Cat-back, Stainless, Natural, Split Rear/Split Side Exit, Ram, 5.7L

Part Number: FLO-817699

5.0 out of 5 stars ( 2 )

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Exhaust System, American Thunder, Cat-back, Single In/Dual Out, Stainless, Natural, Chevy, GMC, 5.3L, Kit

Part Number: FLO-817669

4.07 out of 5 stars ( 15 )

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Exhaust System, Cat-back, American Thunder, 409 Stainless Steel, 4.50 in. Black Ceramic Coated Tips, Dual Rear Exit, Ford, F150, Kit

Part Number: FLO-818169

Not Yet Reviewed

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Exhaust System, American Thunder, Cat-Back, Steel, Aluminized, Heat Shield, Tip, Chevy, GMC, Pickup 2500, 6.0L

Part Number: FLO-17325

5.0 out of 5 stars ( 3 )

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Exhaust System, Cat-back, American Thunder, 409 Stainless Steel, 5.00 in. Black Ceramic Coated Tip, Single Side Exit, Powerboost, Ford, F150, Kit

Part Number: FLO-818166

Not Yet Reviewed

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Exhaust, American Thunder, Cat-Back, Steel, Aluminized, Polished Tip, Chevy, GMC, Pickup 1500HD, 6.0L, Kit

Part Number: FLO-17350

3.13 out of 5 stars ( 8 )

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Exhaust System, American Thunder, Cat-Back, Super 44 Muffler, Single-In/Dual-Out, 3.5 in. Polished Tips, Jeep, Gladiator, Kit

Part Number: FLO-817913

5.0 out of 5 stars ( 1 )

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Exhaust System, Cat-back, American Thunder, 409 Stainless Steel, Dual Exit, Chevrolet, GMC, Kit

Part Number: FLO-817853

5.0 out of 5 stars ( 2 )

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