Abstract: Embodiments of the present invention provide an improved baffle for use in a muffler exhaust system and a system utilizing such baffle. The improved baffle comprises a first conduit portion having a first diameter, a second conduit portion having a second diameter, wherein the second diameter is greater than the first diameter, and a diameter step-up conduit connection portion having two ends, one that connects to the first conduit portion and the other that connects to the second conduit portion. The integrated baffle is disposed within the muffler of an exhaust system such that exhaust from an internal combustion engine enters the first conduit portion first, travels through the first conduit portion and then through the second conduit portion, and is then released into the air.