Check the listing for details. NX613 Nitrous Express Single Entry Crossbar Stage 6 Plate Conversion - 4500. Color: Black, Condition: New. Listed at 582.08 USD. NX613 Nitrous Express Single Entry Crossbar Stage 6 Plate Conversion (4500 Flange) 50-300Hp Description: The new NX Billet Crossbar nitrous plate systems have just raised the bar in nitrous plate technology. The CNC machined design eliminates round spray bars resulting in excellent atomization and cylinder distribution. With no spray bars to sag, rotate or disrupt airflow, this is truly the Next Generation in cross bar nitrous plate technology. This crossbar nitrous conversion includes: Billet aluminum crossbar nitrous plateStainless fittingsCustom solenoid bracketBraided stainless solenoid to plate linesNitrous/fuel jets for 50, 100, 150, 200, 250 and 300HP.Longer carb studs.Carburetor to plate gasketsShipping is FREE inside the contiguous United States. If shipping to Alaska, Hawaii or Puerto Rico please message us for a quote for additional shipping costs.