Original RF Yamamoto NA1 Catalyzer Straight Pipes. Straight Pipes are used to help amplify the car’s airflow from the exhaust manifolds to the exhaust. With straight pipes, they flow straight without any silencers in between to amplify the exhaust’s tone and sound.
Though you need to be aware of your NSX’s LEV.
Those running NA2 NSXs, can still use these but need to make sure to use the NA2 Converters.