Exhaust pipe and muffler for motorcycle that does not heat discolor

Abstract

A chromed exhaust pipe and muffler for motorcycles that is capable of withstanding the extreme heat generated at high rpm's of a motorcycle engine without discoloring or “bluing”. A double wall construction is utilized for the exhaust pipe and muffler with the back side of the exterior chromed pipe cut away along the length of the pipe from the mounting flange to the muffler core. The cut-away exterior pipe is dimensional to allow the interior pipe to be inserted in one piece from the mounting flange to the muffler core, as well as cooling the exterior pipe, thereby preventing heat discoloration of the exterior chromed pipe. Spacers are welded to the interior pipe and the exterior pipe at the backside cut-away of the exterior pipe to space the interior pipe within the exterior pipe. The muffler core includes a baffle core enclosed by an interior pipe section, allowing gases to flow out the back end only. The interior pipe is spaced apart from and enclosed in the exterior chromed pipe. The double walled muffler section prevents discoloration and reduces heat transfer to the exterior chromed pipe. For dual pipes, the double wall construction is utilized on each separate pipe. Both pipes then attach to a Y-shaped collector which is part of a muffler core, both being enclosed by an exterior chromed pipe.

Dependencies are inferred from the claim text.