The 1986-1991 Magnaflow Street Cat-Back Exhaust, w/Quad 3.5" Tip Features a 2.5" fast-flowing mandrel-bent stainless steel tubing and comes with a high-flow cat back Y-pipe. Includes a matched set of single-in, dual-out stainless steel Magnaflow Performance Mufflers and polished, rolled edge, stainless steel tips.