Drum brake HHRs only have 2 rear flex lines. There are hard lines from axle to drums. The rear flex lines are for the body-to-axle area so the axle can move up and down. Rear disc HHRs (SS models and anyone that has done a conversion) adds two more flex lines, one at each rear wheel that goes from the axle to the caliper. This allows you to move the caliper for pad changes.

It's hard to tell from the pictures what two rear lines are included. The info claims it fits LS, LT , and SS models. Are the two rear lines the flex lines at the calipers for SS models, or the two body-to-axle lines used on all models?

Either way, the fronts should work, and those are the ones you are missing.

However, as others have said, I would keep trying to contact ZZP since they owe you front lines. I have bought from ZZP and agree that this is out of character for them.

Steve

 

He didn't get the fronts. The missing lines, the top 2 in the pics, have banjo fittings on one end. The banjo fittings attach at the caliper. The 2 lines in the middle of the pic do not have banjos, these are the SS only lines.