Unparalleled performance, Increase in horsepower and torque gains will be noticed across rpm range, Electroless nickel plating increases part life 2-10x longer, Stamped AKDQ high quality carbon steel, Hand welded and pounded seams, Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available, PREGUNTA POR COMPATIBILIDAD PARA TU MOTO, LO RECIBES EN 7 A 10 DIAS , ENVIAMOS DE EUA