Hello,
Just got the Sundowner seat for my 2014 FLHTK.
Have to say it doesn't seem to feel much different from the stock seat on short around town trips - although I haven't tried it out on long trips yet - maybe I will see an improvement then. Will post after I have tried a long trip with an update (next week I am going to Moruya from Canberra so I'll have a chance to try it out then)...
Can't complain too much as it only cost $379 AUD...
Part # 52000128.
It's a little wider than stock and appears to have moved me about an inch closer to the fuel tank.