I have a 2011 Tri Glide. Has stock radio and speakers. I would like to replace the 4 speakers. What is a good speaker to get?

 

Lots of options out there depending on your budget. Personally, I would recommend using a Metra 82-9601 speaker adapter in the fairing to upgrade to 6.5" speakers. I like the Mmats PA601.4cx coax for the fairing on basic systems. I like the Hertz SX 165 Neo coax in the tour pack pods, as they drop in with a little trimming of the opening on the pod. The downside, is they are getting pricey most places these days. There are probably better options for the tour pack price wise these days.
I would also recommend adding an amp with 125-150 watts per channel. I still like the Stinger SPX 700 as I find it fairly warm sounding. The Sound Digital 800.4 Evox is another good amp choice.

 

Thanks for your advice I will check them out.