The EBC USR7843 Ultimax Grooved rear rotor pairs EBC's USR slot pattern with a direct-fit replacement profile, giving everyday drivers cleaner pad sweeping, better heat dissipation, and meaningfully extended rotor life without touching the factory brake calibration.
Grooved rotor design clears gas and debris. The USR slot pattern continuously wipes the pad face, evacuating brake dust, gases, and surface glazing on every rotation. The result is consistent bite from a cold stop and reduced fade during repeated applications, whether in traffic or on a long downhill grade.
Rotor wear drops significantly compared to semi-metallic alternatives. EBC's friction material reduces disc wear by up to 50 percent versus more abrasive semi-metallic compounds. Where some OEM setups require a rotor replacement at every pad change, the Ultimax compound is gentle enough that a single rotor commonly outlasts two sets of pads, cutting long-term maintenance costs without sacrificing stopping power.
BRAKE-IN coating shortens the bed-in process. Every USR rotor ships with EBC's factory-applied BRAKE-IN coating, which accelerates the initial transfer layer between pad and rotor. Drivers get consistent friction performance sooner, skipping the extended cautious break-in period that bare-metal rotors typically require.
Direct-fit rear application for the 2021-2024 F-150 2.7 EcoBoost. The USR7843 matches the factory hub bore, bolt pattern, and hat depth, so installation requires no drilling, grinding, or adapter hardware. It bolts into place using the same procedure as a stock rotor replacement.
Product Benefits
- USR Groove Pattern: Continuously cleans the pad face to maintain consistent bite and reduce glazing.
- Up to 50% Less Disc Wear: Gentle friction compound extends rotor life well beyond semi-metallic alternatives.
- BRAKE-IN Coating: Factory-applied surface accelerates pad bed-in right out of the box.
- Direct OEM Fit: Matches factory dimensions for a bolt-on rear installation on 2021-2024 F-150 2.7 EcoBoost trucks.
- Improved Heat Dissipation: Grooves vent heat and gas buildup, reducing fade during repeated stops.
- Street-Focused Design: Optimized for daily driving, commuting, and towing duty; not intended for track use.
- Compatible with Ultimax Pads: Pairs naturally with EBC's Ultimax pad line for a matched, low-wear brake system.
About EBC Brakes: EBC Brakes manufactures brake pads and rotors for passenger cars, trucks, and SUVs across a wide range of driving applications. The company's product line spans from quiet, street-optimized compounds like Ultimax to high-friction track compounds, with each rotor and pad combination engineered to work as a system.
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Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Trim | King Ranch, Lariat, Limited, Platinum, Police Responder, SSV, Tremor, XL, XLT, STX |
| Vehicle Fitment | 2021, 2022, 2023, 2024 |
| FMSI Pad No. | D2383 |
