07-17 HARLEY FXDB3: Vance & Hines Hi-Output Short 2-Into-1 Exhaust (Black) The Hi-Output family expands the line with an aggressively stout 2-into-1. Engineered to be a compact version of the Vance & Hines signature stepped megaphone, the Hi-Output 2-into-1 Short is perfect for the rider that demands the performance of a 2-into-1 and the distinctive sound of the Hi-Output.Deep, throaty note.CNC-machine NOT intended for street use.