Cycle Shack's "Dresser Duallies" are 2" diameter stepped crossover head pipes that offer increased flow and performance for the late 96CI and larger displacement motors. Head pipes exit on each side of the bike for a traditional touring bike look and feature O2 sensor bungs. Installation of these headers eliminates the stock rear cylinder Y-pipe. The ZPN731989 and ZPN731990 mufflers are matched with these 2" diameter head pipes and feature a high-flow 2" diameter. baffle. The Quiet Series mufflers feature a stainless steel sound blanket for less crackle, so you can hear your stereo. Fits all 2007-2008 Touring models. Head pipes and mufflers are sold separately.