DMR STAINLESS PRO MOD BIG INCH M8 SOFTAIL EXHAUST.  These are for big inch motors. They start at 2" pipe at the head and step up to a 2-1/4", then go into a 4" muffler body with a straight through perforated muffler design, fully tig welded. Has 18mm O2 bungs and reducers for 12mm O2 sensors. Hidden springs on the back side that connect the collector to the primary tubes, small diameter 12pt exhaust stud nuts for easy installation, muffler bracket, and mounting hardware. These are made to order. Dealers must email to order, dealer discounts are different on this exhaust. Proudly Made In USA!!