Radical 2-into-1 headpipe design stepped 1-3/4" into 1-7/8" designed for performance and increased lean angle as well as a very aggressive exhaust soundMade to fit aftermarket mid controls by Speed Merchant, Performance Machine and Boosted BradStainless steel construction and hand TIG weldingPartial coverage heat shields included18 mm O2 ports with 12 mm adaptersIncludes mounting hardwareBillet slash-cut end capMade in the U.S.A.