3/16 in. hex key
Long torque wrench
Insert two bolts in the black subframe bracket and FKX lower tie bar then tighten them with nuts. On subframe brace and bracket, insert washer in the bolt first then put it in the bracket and subframe brace. Tighten with nut. Do the same thing on the other side then you are ready to install. (Use left side of the picture for install referance.)
It's best to support rear lower arm with the jack. Use torque wrench with 14mm socket to remove bolt. (Finish install one side first don't remove both L/R bolts at the same time.)
Put smaller washer in subframe bolt then insert it into the brace. After that, put Bigger washer next then spacer(nut).
Tighten everything up with torque wrench. Double check everything tightened and aligned and DONE!