aFe MACH Force-XP 304 SS Sing Wall Pol Exh Tip Univ Exit 3in Inlet x 4in Outlet x 12in L - Clamp OnNothing looks cooler than a huge tip completing your exhaust system. The aFe Power tip is constructed out of high luster, polished 304 stainless steel and has a slash cut and an aFe Power logo lazer etched into the top of the tip. A drain port on the bottom keeps rust and corrosion away.