Jet kit for Dr z400s, can I use the sm stage 2 kit?

is there a difference between the s and sm carb. wise? I have an fmf pipe going to do the 3x3 mod and think the stage 2 would be better.

 

SM stage 1 and 2

 

S stage 1

 

Buy the James Dean kit. Solve all your woes. Buy a Kientech extended fuel screw.

 

Done

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