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$899.95
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The classic sound of a Flowmaster chambered exhaust, our American Thunder Series features mufflers tuned to deliver more power, torque, throttle response and mileage. Best of all, these exhaust systems take sedate vehicles and deliver that great performance tone especially designed for muscle car and truck fans. American Thunder is the most authentic Flowmaster muffler sound we offer.
Limited Lifetime
Flowmaster 07-13 gm silverado/sierra, 1/2 ton, 5.3l w/flex fuel, 4.8l (07-08 only), extra c
Flowmaster 10-21 tundra 5.4l/6.4l v8 engine 145 wb cat-back system dual rear/side exit-409s
Flowmaster 14-16 silverado/sierra 1500 crew cab 5.3l flex fuel exhaust system
Flowmaster 21-c f150 2.7/3.5/5.0l flowfx cat-back exhaust sys, dual, 3in tubing, 409ss
Flowmaster 11-18 gm 1500 cc-ec 6.2l amt dor
Flowmaster 14-22 cherokee 3.2l flowfx cat-back exhaust, 2.5in dual outlet, 3.5in tip, stain
Flowmaster 19-c gm 1500 5.3l amt dor/s
Flowmaster 23-c colorado 2.7l flowfx cat-back exhaust, dual/same side, 3.50in tip, 2.50in tube, 409ss
Flowmaster 16-17 tacoma exhaust system
Flowmaster 22-c toyota tundra 3.5l amt dor/s
$899.95
