This 3" diameter BORLA Cat-Backâ„¢ system was designed specifically for the Hyundai Elantra N. The BORLAÂ's system features and Active Exhaust Valve which connects to the Original Equipment control system and provides variable sound levels. The ATAK muffler provides an aggressive tone that is sure to turn heads. BORLA is so confident of our engineering and technology in this system that we offer a no drone guarantee. The system features single round 5" black chrome on T-304 stainless steel tips on each tail pipe. Using BORLA Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. A system with bright chrome on T-304 stainless steel tips is also available. BORLA Cat-Backâ„¢ & 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 T-304 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 numerical control (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.