For the person who wants a subtle custom appearance with all the benefits that a Flowmaster cat-back exhaust system provides. S.O.S. (Single Out Side) systems are the perfect choice. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of [Read More]

For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster cat-back exhaust system provides. D.O.R. (Dual Out Rear) systems are the perfect choice. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements [Read More]

Exhaust System: 2005-2006 Ford Mustang V6; American Thunder Exhaust System

The OrigInal 40 Series muffler delivers an aggressive exterior and Interior tone. If you're lookIng for that origInal, Flowmaster sound this is the muffler for you. Constructed of 16 gauge alumInized steel and fully MIG welded for maximum durability.

The OrigInal 40 Series muffler delivers an aggressive exterior and Interior tone. If you're lookIng for that origInal, Flowmaster sound this is the muffler is for you. Constructed of 16 gauge alumInized steel and fully MIG welded for maximum durability.

This two chamber design incorporates Flowmaster's patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over original 40 Series. Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability.