Exhaust System

The Stillen Y-pipe exhaust is a mandrel-bent stainless steel performance component designed to improve exhaust gas flow and performance for 2003-2009 Nissan 350Z and 2003-2007 Infiniti G35 coupe models. Engineered with 2.5-inch piping that tapers up to 3 inches at the collector, this Y-pipe minimizes backpressure to enhance engine breathing. Please note that this product does not fit Nismo models. Performance gains can reach 7 wheel horsepower and 3 lb-ft of torque. When combined with the Stillen Silver Series Y-pipe back exhaust system, total gains can reach 10 horsepower. The design balances a mild sound at idle with an aggressive tone under throttle, maintaining a comfortable cabin feel while offering a more purposeful aesthetic.