The original Pro Circuit Works Pipe offers unparalleled performance and power for every two-stroke application.Increased horsepower and torque gains will quickly be noticed across the entire rpm range.The unplated, oiled metal finish requires some maintenance, but really gives your bike that ''Works Look''.Features Include:Stamped AKDQ high quality carbon steel constructionHand welded and pounded seamsReinforced mounting brackets and stingerMade in the USA