Installation REQUIRES cutting the O.E. system. BORLA® system eliminates the O.E. resonators. This Cat-Back™ system fits both the 2016-2017 Lexus IS 200T and the 2018-2024 IS 300. BORLA® Cat-Back™ and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower.