I had a set made to work with the Superlift, 13" eye to eye. The only problem was.. they took 2 months to make them. Good product tho.
Not sure where the 9'' to 14'' comes in on the basic ones they sell. The first set I had only went as far as 12'' which is why they had to make me longer ones.
I kept one and sold the other one to a fellow SL WK. (Offsets the cost! )