EXCEPT eTorque Mild Hybrid System and Full-Time 4 Wheel Drive. The 2.5" diameter Borla(r) High Clearance Climber / Rock Crawler Cat-Back(tm) system for the Wrangler JL is designed with ground clearance in mind. This system is perfect for off-roading, overlanding, and rock crawling. It features the mellow Touring sound with no drone inside the vehicle. The exhaust exits thru a 2.5" brushed T-304 stainless steel turn down tip. This system comes with the Borla(r) no drone guarantee. Each system is built from premium T-304 stainless steel giving you the absolute best in performance and durability and is a direct bolt on designed specifically for the 3.6L engine. Ultra-smooth mandrel bends ensure maximum flow & power, and precision Computer Numerical Control (CNC) manufacturing ensures an accurate fit. Best of all, Borla(r) stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.