Hi! I have a 2010 Iron and was wondering if a 21" front single flange 40 spoke wheel, 2.15 rim . and a 16" rear dual flange 40 spoke wheel, 16x5 X-WIDE HUB would fit on it? And would all the guts fit inside?
Your "guts" will be too wide. Mag wheels have wider hubs than spoke wheels. I'd stay away from flange-style wheels unless you don't have a problem messing with different spacer sizes.
And I don't know one way or the other about the 16x5 in a stock set up.