The personality of the Harley-Davidson Dyna, the design, sound and performance of Akrapovič exhaust systems. Akrapovič Open Systems includes header, silencer and heatshield, optional noise reduction insert is available. For perfect performance, throttle response and durability special developed mapping from our partner Dynojet has to be used.   Fits FXD Super Glide  2006 - 2010    FXDB Street Bob  2006 - 2011    FXDC Super Glide Custom  2006 - 2011    FXDF Fat Bob  2008 - 2011    FXDL Low Rider  2006 - 2009    FXDWG Wide Glide  2010 - 2011    FXDWG Wide Glide  2006 - 2008