I think I have 3 1/2 in the rear and 4 in the front or maybe it's the other way around. It also depends on how you set your shocks. You just have to play with it and find the best preasure for the type of riding you do.
on my papa's trailboss 250 2 stroke 2wd, it has i believe 3psi up front and 3 1/2 psi in the rear. like others have said its factoring in the type of terrain you ride on/in, and what your shocks are set up like.
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