Cat Back Exhaust System

The STILLEN Cat Back Exhaust System is engineered to significantly enhance the performance and sound of your 2016-2024 Infiniti Q50 with the 3.0t engine. Recognizing that the luxury focus of the Q50 involved compromises that restricted its breathing and power potential, STILLEN developed this system to streamline exhaust gas flow and remove restrictions. Through extensive R&D and multiple prototypes, STILLEN engineers achieved notable gains, unlocking an estimated 26.3 HP at 4,680 RPM and 29.5 lb-ft of torque at 4,680 RPM. The system features a 2.5" Y-Pipe for improved airflow, connecting to a 3" Mid-Pipe that then splits into a dual rear exit with 2.5" pipes. Constructed from durable 304 stainless steel, this cat-back exhaust system is built for longevity and features polished bolt-on exhaust tips. It is compatible with the OEM valance or can complement a STILLEN Rear Diffuser. The system also includes a Limited Lifetime Warranty. Fuel mileage gains can also be expected at cruising speeds due to the improved flow characteristics. This cat-back exhaust system is designed to fit 2016-2024 Infiniti Q50 AWD/RWD models equipped with the 3.0L Turbo V6 engine.