The Power Stop Z36 Truck & Tow rear kit is a rear-axle pad and rotor package from the brand's Z36 severe-duty line, which the manufacturer recommends for trucks, 4x4s, and SUVs that tow and haul. The rotors are drilled and slotted to help keep brake temperatures down on long mountain descents, and the pads use a carbon-fiber ceramic compound. Owners on user forums say the JK and JKU load their rear brakes more heavily than the fronts, so a rear-axle upgrade targets the component that works hardest. This kit is a good match for 2007-2017 Jeep Wrangler JK and JKU owners who want a towing-capable rear brake setup for heavier loads or larger tires.
The Z36 pads step up from the brand's Z23 performance tier, according to owners on user forums, which makes this kit a stronger choice than a basic rotor-only swap. The manufacturer treats the break-in procedure as critical because it deposits an even friction layer on the rotors, so skipping or rushing it can undercut the braking you paid for. Buyers searching for 2007-2017 Wrangler JK rear brake pads and rotors, Z36 ceramic towing pads, or drilled and slotted JKU rear rotors will find this kit covers the key replacement parts in one package.
Yes. The manufacturer describes the break-in as critical to brake performance because it establishes an even layer of friction material on the rotors, and that initial layer should be evenly distributed.
Owners on user forums describe removing the caliper bolts and pulling the caliper off the rotor while keeping the brake hose attached. They advise making sure the caliper does not hang from the line during the swap.
Owners on user forums describe the rear swap as removing the caliper bolts from the back of the caliper, then pulling the caliper clear of the rotor. Plan on 18mm and 21mm sockets, a C-clamp to compress the piston for the thicker new pads, and a rubber mallet, since the old rotor often sticks and may need tapping before it slides off. The manufacturer's Wrangler JK and JKU install walkthrough covers the rotor and pad replacement, followed by brake bleeding and the break-in procedure, so plan time for those final steps before normal driving.
