Borla's systems are a brilliant mix of quality, performance, and affordability. Just some of the reasons they are so popular on a variety of cars and applications. They are made from the finest stainless steel and deliver a fantastic powerful but controlled Motorsport V8 sound. A winner on your M5! From Borla: BORLA Cat-Back™ exhausts feature 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 motoring enthusiasts everywhere. Each system is built from premium austenitic stainless steel, superior to T-400 series knockoffs, 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 system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. All Borla exhaust systems feature the following:
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