The roar of Flowmaster’s American Thunder Diesel Exhaust Systems will raise your pulse while reducing your EGTs. The American Thunder is Flowmaster’s most aggressively toned diesel exhaust, built from durable aluminized steel. Most come with a tip. 3-year warranty.
Better get a good grip on your steering wheel—the explosive performance of Gibson Diesel Exhaust Systems have been known to take the wind out of the faint-hearted. Don’t let the mild tone of these diesel exhaust systems fool you. They serve up serious performance gains. Built from T-409 stainless or aluminized steel—both come with a tip. Lifetime Warranty.