I have a 2009 Vision - not sure it matters but may....
My stock speakers are 2 ohm (not 4 ohm)
I found some speakers but not sure if magnets on back will be too big. Here is the link.
These are claimed to be 2 ohm speakers.
Any one remember how much room we have in our fairing/speaker location?
Right now you can get another 5% off plus free shipping. Makes these about $55
Those look like they will fit no problem.
2014 Victory Vision, 2011 Can Am Spyder RS/S, 2010 Triumph Thunderbird