aFe MACHForce XP Exhausts Tips SS-304 EXH Tip 4In x 7Out x 18L Bolt-On (blk)aFe MACHForce XP Exhausts Tips SS 304 EXH Tip 4In x 7Out x 18L Bolt On (blk) Nothing 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. MACH Force Xp Universal Clamp on Exhaust Tip Black 4 IN Inlet x 7 IN Outlet x 18 IN L