2.5-Inch to 3-Inch Mandrel-Bent Y-Pipe

The Stillen Y-pipe is a mandrel-bent stainless steel exhaust upgrade designed to optimize exhaust gas flow for the 2003-2009 Nissan 350Z and 2003-2007 Infiniti G35 Coupe. By utilizing 2.5-inch piping that increases to 3 inches at the collector, this Y-pipe reduces restriction to improve overall engine efficiency and exhaust note. This Y-pipe maintains the factory configuration and location of the output flange, ensuring compatibility with both the Stillen Silver Series Y-Pipe Back Exhaust and other aftermarket Y-pipe back systems. The design offers a mild note at idle and a more aggressive tone under throttle. Please note that this product does not fit Nismo models. Users should confirm their specific vehicle configuration before installation to ensure compatibility.