Easy way to set preload on BC coilovers.  

The lower locking nut can’t move once its finger tight to the larger spring nut you tighten by hand. Then while tightening the larger spring nut with the spacer wrench make sure the space between the lower nut and the larger nut you moved is 4mm.

@@stagedracing8150 When you say lower nut, do you mean the 3rd bottom one you didn’t really touch? Just want to make sure I understand

@@chrissahagun4803 yes that’s the one that’s is loosened to move height