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★Please select 1080p for the video quality setting!!! This is the Vans muffler tuning machine of Jeonju Dubal Freestyle Team Iron883 rider. I followed the muffler tuning work that was done in Daejeon. I only changed the muffler end... but it really produced an amazing sound. #HarleyDavidson #Iron883 #MufflerTuning #Vans #VansMuffler