Fitment Information Cadillac ATS 2.0L 4 Cyl. (2013, 2014, 2015) Automatic Transmission RWD 4 Door Fits 2014-2015 ATS Equipped With Muffler With Two Inlet Pipes. Emissions Compliance This is an axleback exhaust and does not alter, replace, or modify any emissions equipment. Specs & Features Direct bolt on Exhaust Type: Axle Back Sound Type: S-Type Pipe Diameter: 2.25" Tip Size: 4" Tip Description: Single Round Rolled Angle-Cut Lined Exit: Single Split Rear Exit 1,000,000 mile warranty Borla Cat-back & Axle-back exhaust systems 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 300-series austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & 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.