My DJ kit came with 16 jets, adjustable needles, main air jet restrictors. No springs on my kit but from what i understand the ZZR kits come with them.
this is the kit I purchased,
comes with 14 jets, adjustable needles with increment washers, plugs and slide springs.
I installed everything as per instructions and dont have any problems. Used the 122,124 in/out combo with a yoshi slip-on.