The K5873 is a front-axle kit from Power Stop's Z23 Evolution Sport line, combining Carbon-Fiber Ceramic brake pads with Drilled & Slotted rotors. The manufacturer says the package includes pads, rotors and premium stainless-steel hardware for an easy, bolt-on upgrade. The case for paying more than stock is braking feel and dust control: the manufacturer says the pads add increased braking power with a low-dust formula, and owners on user forums report next to no dust after months of use. Owners on user forums also report keeping these pads still going strong well into high mileage. Buyers searching for a GX460 front brake upgrade, Z23 ceramic pads, or drilled and slotted rotors for a 4.6 V8 SUV should note that year coverage varies by listing, so confirm your VIN before ordering.
Fitment is the main thing to verify. Published year ranges for this kit differ between sources, so check your exact model year, trim, and VIN with the manufacturer. Owners on user forums warn that GX460 rotors require GX460 calipers, so mixing parts from the GX470 can cause problems. For installation, owners describe the swap as manageable with a jack, jack stands, and standard hand tools, though one owner needed a sledgehammer to knock off the old rotors. The manufacturer's Z23 literature calls Break-In is critical for optimal performance, so plan the bedding procedure before your first highway drive.
Owners on user forums advise against it. They report that GX460 rotors require GX460 calipers, so match the caliper to the GX460 rather than the GX470.
Yes. The manufacturer's Z23 literature describes break-in as critical for optimal performance and notes that a resin smell during the first hot stops is normal.
Published year coverage is not consistent across sources. Confirm your exact model year, trim, and VIN with the manufacturer before ordering.
Owners on user forums describe this as a manageable front brake job for someone comfortable working on brakes, but the rotors can be stubborn. Plan for a jack, jack stands, a C-clamp for pushing the caliper piston back, a wire brush for cleaning the caliper bracket rails, and brake grease for the pad contact points. Use brake fluid of the type specified in your owner's manual. Forum members advise confirming the caliper slide pins are clean and lubricated, and checking that caliper bolts are torqued to specification after reassembly, since one owner reported loud clunking until these points were rechecked. Consult the manufacturer's front-brake install guide before starting.
