stock seats compatible between years

[peterbaron]

I've done some research on this subject myself as I plan on fitting a '17 EX seat on my '14 DLX....

From what I've gathered, seats from varying years should be interchangeable as far as mounting. However, due to the varying sizes and relative shape differences at the base of the tank between the '13/'14 Standard, '14 DLX & '17 EX/RS models, there may be slight aesthetic and clearance differences at the front.

That being said, I think the differences would only be noticeable when going between a Standard model OEM seat and DLX/EX bike or vice-versa.

I think you are correct.
I replaced my 14.6 L tank with 16.8 L/ 2014 white EX tank from Japan/Takaski
At that time, he mentioned about slight interference with my seat and suggested putting a soft cloth in between.
Fitment of 16.8 L tank was so perfect , and I had to do nothing.
Hope this helps to support your findings

pb