This system produced gains of up to +12 HP and +15 lbs. x Ft. TQ., as measured on our in-house dyno. This cat-back exhaust system is constructed of 3 IN - 2-1/2 IN mandrel-bent 304 stainless steel tubing for maximum strength and durability. This system features a high-flow 304 stainless steel muffler, producing a mild sound. This system produces a mild sound unleashing all available horsepower and torque. Utilizing a factory style flange and hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation. This cat-back exhaust system uses a heavy duty flex pipe with an internal interlock liner for added strength and durability. A mitered merge collector is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower, torque and improved throttle response. Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment. 100% MIG-Welded for race-proven strength and durability. MACH Force-Xp 2 IN to 2-1/2 IN Stainless Steel Cat-Back Exhaust System Alfa Romeo Giulia 17-21 L4-2.0L (t) Alfa Romeo Giulia 17-21 L4-2.0L (t) Fitment: 2017 Alfa Romeo Giulia Base 2017 Alfa Romeo Giulia TI 2018 Alfa Romeo Giulia Base 2018 Alfa Romeo Giulia TI 2019 Alfa Romeo Giulia Base 2019 Alfa Romeo Giulia Sport 2019 Alfa Romeo Giulia TI 2020 Alfa Romeo Giulia Base 2020 Alfa Romeo Giulia Sport 2020 Alfa Romeo Giulia TI 2021 Alfa Romeo Giulia Sprint 2021 Alfa Romeo Giulia TI