Fitment Information Infiniti G35 Sedan (2007, 2008) Infiniti G37 Sedan (2009, 2010, 2011, 2012, 2013, 2014) RWD and AWD Axle Back Muffler Delete Specs & Features 63mm Exhaust Piping 102mm Exhaust Tips Bolt On Exhaust Deep and loud sound - No mufflers! Polished Stainless Steel Piping Beautiful and strong TIG welds Mandrel bent piping for smooth exhaust flow Includes new bolts and gaskets for easy install Top Speed Pro 1 has been known for its popular exhaust systems due to the unique sound, excellent fitment, high performance and awesome looks.  These exhaust systems are designed to provide the smoothest exhaust flow from their enlarged mandrel bend piping which increases horsepower and torque.  Each exhaust features a unique Top Speed muffler to provide a distinct modified sound and quality flanges and hangers for great fitment.