Hawk ER-1 Front Race Brake Pads for Mazda RX-7 - HB152D.540

Hawk ER-1 front brake pads, exact part HB152D.540, nominal .540 inch thickness.

Source-supported applications include 1985 RX-7 GSL-SE and selected 1986-1991 RX-7 standard front brake packages. Confirm the exact year, trim and installed original brake assembly before ordering.

RX-7 brake-package restriction: Requires the original single-piston sliding front caliper and matching iron disc. On 1986-1991 models, retain the specified normal-ride/standard suspension restriction. Excludes original four-piston front brakes, including the four-piston sport, Turbo, GTUs and Convertible packages. Mazda's 1989-1990 brochures distinguish the GTU standard brakes from the GXL, Turbo and Convertible four-piston brakes; conflicting catalog rows are not proof of compatibility.

Verify the original pad profile, retaining hardware and rotor dimensions. Do not assume compatibility from model name, wheel lug count, another HB152 compound or an aftermarket caliper conversion. Vehicle-selector inclusion alone does not resolve an unconfirmed application.

ER-1 Compound

Endurance racing compound engineered for consistent brake torque, modulation and wear across long-duration track use.

• Front axle race pad set
• Hawk pad shape: HB152
• Hawk part number: HB152D.540

Important: Expect increased noise, dust and rotor wear.