I put a set of 11" Pro-Action shocks on my 2014 SGS. They are pure quality. I called Pro-Action and ask the what adjustments to make to get the ride I want. They told me what to do and the ride is the best I've ever had.
I just put a set last week on my 2013 CVO Road king ,i buy the 13" ,
They are AWESOME, i have the 12" HD Premium, way too stiff at the lowest setting , and i also try Progressive 440 13" from a previous bike, the Progressive was good on little bumps and bottomed too often on the larger bumps, or hopping in the small stuff and good on the larger ones.... Never perfect, i weighted 200 pounds..