Quick view Nitrous Express Nitrous Express Single Entry Crossbar 8500 Based Throttle Body Nitrous Plate Conversion - NX639 Compare $725.99 NX Single Entry Billet Crossbar nitrous plate systems provide the crossbar spray pattern that everyone loves in a package that is legal for racing classes that allow only one nitrous and one fuel jet. With no spray bars to sag, rotate or disrupt airflow,... Add to Cart Add to Cart