Originally Posted by
Schwinnsta
D means not as well spec'd as P. 4 speed SA hubs at least the English ones were less reliable and needed more careful adjusting. I had a 7 speed Shimano and it was reliable but heavy and less efficient than 3 speeds.
Looking at most of the range D just seems to mean derailleur even being used for higher end 9 speed derailleur models. Just noticed there is even a D3 model with a 3 speed cogset, not seen that before. i for internal gears and Ei for e-bike with internal hub gears. The 'P' seems to be less commonly used and not on the current models.
Just noticed they have max rider height on the left column and then a choice of 100kg or 105kg. Site still needs a lot of work.