Description Aussiespeed performance exhaust package for 4 stroke ohv Briggs & Stratton Animal & World Formula engines, Chrome plated finish header pipe part number AS0237C,  Aussiespeed AS0280C-32 long series 2 piece muffler includes 2 connecting springs to connect the header pipe to the muffler . This press bend header pipe suits engines that perform over a wide rev range it increases performance & torque & is designed for engines that use a wide rpm range. This is a full exhaust system including chrome header pipe, chrome long series muffler