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Flowmaster American Thunder Exhaust Systems

4.37 out of 5 stars 550 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 - 17 of 17

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, American Thunder, Header-back, Dual, Stainless, Split Rear/Split Side Exit, Chevy, GMC, Kit

Part Number: FLO-817654

4.59 out of 5 stars ( 17 )

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Exhaust System, American Thunder, Crossmember back, Dual, Stainless, Split Rear/Split Side Exit, Chevy, GMC, Kit

Part Number: FLO-817940

Not Yet Reviewed

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Exhaust, American Thunder, Cat-Back, Steel, Aluminized, Polished Stainless Tips, Chevy, GMC, Small Block, Kit

Part Number: FLO-17470

4.11 out of 5 stars ( 9 )

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Exhaust System, American Thunder, Header-back, Steel, Aluminized, Split Rear/Split Side Exit, Chevy, GMC, Kit

Part Number: FLO-17654

4.33 out of 5 stars ( 12 )

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Exhaust System, American Thunder, Header-Back, 409 Stainless Steel, 1963-66 Chevy/GMC, C10, Long and Short Bed, Straight /Side/Down Outlets, Kit

Part Number: FLO-817937

4.25 out of 5 stars ( 4 )

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Exhaust, American Thunder, Cat-Back, Steel, Aluminized, Polished Stainless Tips, Chevy, GMC, Pickup, 5.0, 5.7L

Part Number: FLO-17473

4.67 out of 5 stars ( 3 )

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Exhaust, American Thunder, CatBack, Steel, Aluminized, Polished Tips, Chevy, GMC, Pickup, 2 door, 4.8, 5.3L

Part Number: FLO-17435

5.0 out of 5 stars ( 2 )

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Exhaust, American Thunder, CatBack, Steel, Aluminized, Polished Tips, Chevy, GMC, Pickup, 3 door, 4.8, 5.3L

Part Number: FLO-17428

3.5 out of 5 stars ( 10 )

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Exhaust, American Thunder, CatBack, Steel, Aluminized, Polished Tips, Chevy, GMC, 4.8, 5.3L, Kit

Part Number: FLO-17430

5.0 out of 5 stars ( 6 )

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Exhaust, American Thunder, Cat-Back, Steel, Aluminized, Polished Tips, Chevy, GMC, 4.8, 5.3L, Kit

Part Number: FLO-17368

3.0 out of 5 stars ( 2 )

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Exhaust System, American Thunder, Cat-Back, Steel, Aluminized, Heat Shield, Chevy, GMC, Pickup, 5.7L

Part Number: FLO-17287

4.67 out of 5 stars ( 9 )

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Exhaust, American Thunder, Cat-Back, Steel, Aluminized, Polished Tips, Chevy, GMC, 4.8, 5.3L, Kit

Part Number: FLO-17419

5.0 out of 5 stars ( 4 )

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Exhaust, American Thunder, Steel, Aluminized, Resonator, Tip, Chevy, GMC, 5.3, Kit

Part Number: FLO-17342

4.75 out of 5 stars ( 8 )

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Exhaust, American Thunder, Cat-Back, Steel, Aluminized, Polished Stainless Tips, Chevy, GMC, Pickup, 5.7L, Kit

Part Number: FLO-17468

4.0 out of 5 stars ( 3 )

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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, American Thunder, CatBack, Steel, Aluminized, Polished Tips, Chevy, GMC, Pickup, 4.8, 5.3L

Part Number: FLO-17436

4.2 out of 5 stars ( 5 )

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