Patent ID: 7878300

Claim:
A modular exhaust system for use with an engine, comprising: a muffler body comprising: first and second concave stamp formed shell members, the first shell member containing portions defining at least one inlet hole, said shell members cooperating to define a hollow shell having first and second opposing ends, the first end containing portions defining a first end opening; a tailpipe having a first and second end, the tailpipe internally traversing the hollow shell, the first end of the tailpipe extending through the first end opening of the hollow shell, the tailpipe having a first tailpipe section outside the first end of the hollow shell sealably connected to the portions of the hollow shell defining the first end opening of the hollow shell, and a second tailpipe section within the hollow shell, the second tailpipe section having portions defining a plurality of perforations; a transfer tube having a first and second end, a transfer tube diameter greater than the tailpipe diameter and a length smaller than the length of the second tailpipe section, the transfer tube attached to the second tailpipe section encircling the region of the second tailpipe section defining a plurality of perforations; one inlet tube for each inlet hole of the first shell member of the hollow shell, each inlet tube having a first and second end, the first end communicably attached to the muffler body to allow gas to flow into the muffler body through the inlet hole; one connector for each inlet tube, the connector attached to the second end of the inlet tube allowing the inlet tube to be communicably attached to an engine to allow for the flow of exhaust gas from the engine to the muffler body.