Complete turndown or sideways end cap assembly replacement for your current style EVO R, S or U muffler, your current style EVO M muffler, or your current style ECO. One-piece high-temp coated turndown \ sideways \ EVO M \ ECO (black only) red or black end tip. If your EVO R, S or U muffler is horizontal (oval shape is horizontal and not sitting vertically) then you need an EVO Sideways end cap assembly. If your EVO R, S or U muffler is vertical (oval shape is vertical and not laying horizontally) then you need an EVO Turndown end cap assembly. Aluminum base plate included with Assemblies along with button-head base plate screws. Socket head end tip screws. Notes: The end tip / assembly may not fit older style Big Gun mufflers like EVO X, EVO Race and EVO Limited. Use Loctite on all screws and periodically check to ensure they are tight.