The EBC GD7603 is a rear brake rotor from the brand's GD Sport line, fitted to the 2015-and-newer Ford F-150 with the 2.7L Twin Turbo engine in 2WD form. The manufacturer's design approach uses wide-aperture slots meant to pull air across the friction surface and keep temperatures in check during repeated stops. Its dimple-drilled face lets pad gases escape without through-holes, which the manufacturer says avoids the cracking associated with cross-drilled rotors.
Compared with stock rotors, the main reason to buy this part is heat management on a heavy truck that is often loaded or towing. The grey iron casting and thermic black anodized finish add corrosion resistance, which matters on trucks driven through salted winters. Forum opinion is split, though: some owners on user forums argue that slotted or drilled rotors add little braking benefit for ordinary daily driving, so the upgrade makes the most sense for towing, mountain grades, or spirited use. Pairing these rotors with pads rated for the same duty is the usual advice.
Rear rotors on this generation of F-150 are known for rusting onto the hub, so plan for a stubborn removal. Penetrating oil, a brass drift, and anti-seize on the hub face make future service easier. Trucks with the electric parking brake require a service procedure before caliper work.
Fitment lists for this rotor vary, and the trim coverage is not consistent across sources. Confirm fitment with the manufacturer using your VIN before ordering.
Owners on user forums commonly report that the rear rotors rust onto the hub. Penetrating oil and firm, repeated taps with a hammer or a brass drift usually break them free. Some owners thread bolts through the caliper bracket holes to press the rotor off.
Owners on user forums with electric rear calipers say the parking brake must be placed into maintenance mode before the caliper is serviced. Confirm the exact procedure in Ford's service information for your truck.
Owners on user forums describe the rear swap as a manageable home job for someone comfortable with brakes, with the main difficulty being rotor removal. Gather penetrating oil, a rubber mallet or brass drift, a puller or bolts for the caliper bracket holes, anti-seize, brake cleaner, and caliper pin grease. Clean and lubricate the slider pins and hardware while the caliper is off, since worn hardware affects pad retraction. On trucks with a manual parking brake, some owners back off the parking brake adjuster to help the rotor come free. Check the torque specification with the manufacturer or Ford service information before reassembly.
