I have no experience with the 1300's, but have read a lot. All I can offer is V & H used to offer a "quiet baffle". How much quieter than their regular ones IDK. Maybe after a lengthy search on your part, either on the 2 VTX forums, the facebook VTX group, or eBay/ Amazon, you might get lucky. Parts just aren't made for these bikes anymore. I have read in the past of some owners using some fabricating skills and installing in the pipe openings sink strainers, and large flat washers as extra baffling. Good luck sir.