The Infiniti G35 Sedan gets a big boost in performance with the addition of STILLEN's new Cat-back Exhaust System. This Stainless Steel cat-back exhaust system will increase your Sedan's performance by 21-23 hp and 21-23-lbs ft. of torque - at the rear wheels! Twin resonators ensure that the exhaust note is powerful and yet remains responsible for adult use. This is a dual path, single muffler system that uses Stillen's distinctive X pipe to promote exhaust scavenging as well as balancing pressure. With only 4 pieces to install this system weighs in at 13 lbs. less than the stock exhaust and offers a precise fit. Polished pieces include the twin resonators & muffler while twin polished Stainless tips finish off the system for a great look. Please note, this exhaust ships in two boxes. We will contact you with an exact shipping quote before processing your order.