2 1/4" Chubs Drag Pipes Harley Dyna Superglide Wide Glide Street Fat Bob 2006^2 1 4" Chubs Drag Pipes Harley Dyna Superglide Wide Glide Street Fat Bob 2006^ New Set of Custom Zilla performance Chubs, (short Fat Drag Pipes) w 02 Sensor holes for 2006^ Dyna!! May have clearance problems with mid controls have had to modify some mounting. these are 18mm holes if u need 12mm the sell reducers too go done too 12mm o2 sensors no warranty on chrome . these are cheap pipes, no way to warranty. This is a new item Please look at pictures