The BORLA R&D Team has developed an awesome sounding exhaust for the 1.6L in your K5. Our 2.25" diameter Cat-Back™ system is specifically tuned for the 1.6L engine. The classic S-Type system will deliver a sound that is much sportier than stock, yet still refined and far from obnoxious. Not to mention, a drone-free driving experience for comfort during cruising speeds. The muffler features BORLA'S Polyphonic Exhaust Harmonizer technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full bodied sound. System includes flow plate to eliminate check engine light that may be caused by the increase of airflow of the BORLA system. System features a 2.25" turn down exit. 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, high-quality 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. Bolt-on a BORLA and get the sound to match your Kia's Performance. Each BORLA Exhaust System is built from premium T-304 austenitic stainless steel to give you the absolute best in performance and durability. Best of all, BORLA stands behind every system with a Million-Mile Warranty. Just what youd expect from the worlds most experienced (and most winning) exhaust brand.