what year rear dyna fenders fit a 2013?

 

No too narrow

 

I *think* it's '06 and up. New frame in '06.

 

Any 06 and up will fit. Wide glide and fat bob fenders are the same width.
Superglide street bob low rider are all a Direct swap.
2005 and prior are narrow, but also they are for a 16 inch wheel. 2006 and up fit a 17 inch wheel. So your tire will rub your taillight wires when your shocks compress.