Bison Motorsports Tall Velocity Stack for S&S Carbs - Polished Hand crafted from 304 stainless steel for superior strength, quality and long lasting shine. Carb flange is precision tig welded and is made from 400 series vibration resistant steel. Fits S&S Series Super E and Super G carburators Comes complete with gasket and mounting hardware for a quick and easy installation. Made in USA