The Borla catback exhaust for the Evo X features patented, straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy and the distinctive Borla sound of power respected by performance enthusiasts everywhere. Each Evolution X Borla exhaust is built from premium stainless steel to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow and power, and precision computer-controlled CNC manufacturing ensures an accurate fit. Best of all, Borla stands behind every EVO X system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.