Synergy 5017 - 2012+ Jeep JK Exhaust Spacer Kit - Manual (Page 4)

5) With the flange bolts removed, push the factory cross over pipe back to allow for
installation of the 5017 exhaust spacers. The removed exhaust rivet and loosened
clamp should allow the factory cross over pipe to slip further into the mid section
of the exhaust. Gently wiggle and push the crossover pipe back for added
clearance.