Big Gun EVO R Sideways End Cap Assembly - RedIf your muffler is vertical (oval shape is vertical and not laying horizontally) then you need a vertical end cap assembly If your muffler is vertical (oval shape is vertical and not laying horizontally) then you need a vertical end cap assembly This end tip assembly may not fit older style Big Gun mufflers like EVO X, EVO Race & EVO Limited One piece high temp coated sideways tip for mufflers that lay horizontally 4 button head base plate screws 4