The perfect finishing touch for any stock or S&S Twin Cam style engine. These S&S tappet covers are CNC machined from billet aluminum and polished or chromed to a show finish. The CNC machining assures dimensional accuracy, while the billet material provides extra strength and dimensional stability over a wide temperature range. Sold in sets for front and rear and come complete with gaskets and chrome screws. Fits all Twin Cam engines 1999 to present.