Synergy 5221-A - 2011+ Jeep JK 2/4 Door Front Cage Kit - Manual (Page 3)

6. Position the A to B pillar spreader bars, the rear of the bars fit in the cut-outs of the
B-pillar cross bar bracket, align the front so the bars are parallel and square to the A
and B pillar cross bars and tack weld them into place. You can go ahead and finish
weld the bars now if you want.