The R1 Concepts drilled rear-left brake rotor for 1988–1989 Mazda 929 is a black-finish replacement rotor intended to restore rear braking surface and operation for that axle and narrow year range. The drilled face helps vent gases and assist heat control to support steadier braking under repeated stops. Verify rear-left fitment for 1988–1989 Mazda 929 applications before purchase.

R1 88-89 Mazda 929 Rear Left Drilled Black Brake Rotor