Cobra Streetrod Slashdown Exhaust Chrome 3917 Large 2 1/2in., 222 heat shields fit from the exhaust ports to the chromed billet tips for a seamless look and non-bluing finish. Chromed billet end caps are beautifully machined for show-custom look. Gives overall power increase with improved rideability. Made even better with the installation of the Cobra Fi 2000 fuel processor, or jet kit on carbureted engines. Easy installation with all mounting hardware included.