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 sound. Made to fit aftermarket mid controls by Speed Merchant, Performance Machine and Boosted Brad. Stainless steel construction and hand TIG welding. Partial coverage heat shields included. 18 mm O2 ports with 12 mm adapters. Includes mounting hardware. Billet slash-cut end cap. Made in the U.S.A..