The Gibson single exhaust for 1997–1999 Ford Explorer XL 4.0L is a stainless bolt-on cat-back that exits straight out the back with a polished stainless tip, offering a reliable upgrade to the stock system. Expect average gains of about 5–10 horsepower. The kit includes mandrel-bent tubing, a baffled Superflow muffler for minimal interior drone, polished slash-cut tip, factory-style hangers and a lifetime limited warranty.
Gibson 97-99 Ford Explorer XL 4.0L 2.5in Cat-Back Single Exhaust - Stainless